Amazon LeetCode Questions

1968 questions all-time · 527 easy · 1074 medium · 367 hard

#	Problem	Difficulty	Frequency	Acceptance
1	Two Sum	Easy	100	0.6%
2	LRU Cache	Medium	89	0.5%
3	Trapping Rain Water	Hard	87	0.7%
4	Number of Islands	Medium	86	0.6%
5	Longest Substring Without Repeating Characters	Medium	84	0.4%
6	Best Time to Buy and Sell Stock	Easy	83	0.6%
7	Group Anagrams	Medium	80	0.7%
8	Add Two Numbers	Medium	79	0.5%
9	Reorganize String	Medium	79	0.6%
10	3Sum	Medium	79	0.4%
11	Longest Palindromic Substring	Medium	79	0.4%
12	Merge Intervals	Medium	77	0.5%
13	Container With Most Water	Medium	77	0.6%
14	Median of Two Sorted Arrays	Hard	76	0.5%
15	Koko Eating Bananas	Medium	75	0.5%
16	Valid Parentheses	Easy	75	0.4%
17	Course Schedule	Medium	75	0.5%
18	Merge k Sorted Lists	Hard	74	0.6%
19	Longest Common Prefix	Easy	74	0.5%
20	Rotting Oranges	Medium	74	0.6%
21	Subarray Sum Equals K	Medium	73	0.5%
22	Merge Sorted Array	Easy	73	0.6%
23	Search in Rotated Sorted Array	Medium	71	0.5%
24	Top K Frequent Elements	Medium	71	0.7%
25	Maximum Subarray	Medium	71	0.5%
26	Longest Consecutive Sequence	Medium	71	0.5%
27	Copy List with Random Pointer	Medium	70	0.6%
28	Lowest Common Ancestor of a Binary Tree	Medium	70	0.7%
29	Generate Parentheses	Medium	70	0.8%
30	Palindrome Number	Easy	70	0.6%
31	Word Ladder	Hard	69	0.5%
32	Majority Element	Easy	69	0.7%
33	Product of Array Except Self	Medium	68	0.7%
34	Merge Two Sorted Lists	Easy	68	0.7%
35	Jump Game	Medium	67	0.4%
36	Climbing Stairs	Easy	67	0.5%
37	House Robber	Medium	67	0.5%
38	Letter Combinations of a Phone Number	Medium	66	0.7%
39	Course Schedule II	Medium	66	0.6%
40	Word Search	Medium	65	0.5%
41	Spiral Matrix	Medium	65	0.6%
42	Sliding Window Maximum	Hard	65	0.5%
43	Valid Anagram	Easy	65	0.7%
44	Next Permutation	Medium	64	0.5%
45	Rotate Image	Medium	64	0.8%
46	Analyze User Website Visit Pattern	Medium	64	0.4%
47	Kth Largest Element in an Array	Medium	63	0.7%
48	Coin Change	Medium	63	0.5%
49	Task Scheduler	Medium	63	0.6%
50	Remove Duplicates from Sorted Array	Easy	63	0.6%
51	Meeting Rooms II	Medium	62	0.5%
52	Find Median from Data Stream	Hard	62	0.5%
53	Roman to Integer	Easy	62	0.7%
54	Subsets	Medium	62	0.8%
55	Merge Strings Alternately	Easy	62	0.8%
56	Unique Paths	Medium	62	0.7%
57	Insert Delete GetRandom O(1)	Medium	61	0.6%
58	Find Peak Element	Medium	61	0.5%
59	Pascal's Triangle	Easy	61	0.8%
60	Word Break	Medium	61	0.5%
61	Reverse Integer	Medium	60	0.3%
62	First Missing Positive	Hard	60	0.4%
63	Jump Game II	Medium	60	0.4%
64	Move Zeroes	Easy	60	0.6%
65	Asteroid Collision	Medium	60	0.5%
66	Sort Colors	Medium	60	0.7%
67	Largest Rectangle in Histogram	Hard	60	0.5%
68	Create Hello World Function	Easy	60	0.8%
69	Rotate Array	Medium	60	0.5%
70	Find First and Last Position of Element in Sorted Array	Medium	60	0.5%
71	N-Queens	Hard	60	0.8%
72	Longest Repeating Character Replacement	Medium	60	0.6%
73	Recyclable and Low Fat Products	Easy	60	0.9%
74	Best Time to Buy and Sell Stock II	Medium	59	0.7%
75	Min Stack	Medium	59	0.6%
76	Fruit Into Baskets	Medium	59	0.5%
77	Minimum Window Substring	Hard	59	0.5%
78	Valid Sudoku	Medium	59	0.6%
79	Binary Tree Maximum Path Sum	Hard	59	0.4%
80	4Sum	Medium	59	0.4%
81	Identify the Largest Outlier in an Array	Medium	59	0.4%
82	Single Number	Easy	58	0.8%
83	Max Consecutive Ones III	Medium	58	0.7%
84	Palindrome Linked List	Easy	58	0.6%
85	Serialize and Deserialize Binary Tree	Hard	58	0.6%
86	Reverse Nodes in k-Group	Hard	57	0.7%
87	Sqrt(x)	Easy	57	0.4%
88	Capacity To Ship Packages Within D Days	Medium	57	0.7%
89	Search a 2D Matrix	Medium	57	0.5%
90	Daily Temperatures	Medium	57	0.7%
91	Binary Tree Right Side View	Medium	57	0.7%
92	Reverse Linked List	Easy	57	0.8%
93	Single Element in a Sorted Array	Medium	57	0.6%
94	Zigzag Conversion	Medium	57	0.5%
95	Binary Tree Zigzag Level Order Traversal	Medium	57	0.6%
96	LFU Cache	Hard	57	0.5%
97	Regular Expression Matching	Hard	56	0.3%
98	All Nodes Distance K in Binary Tree	Medium	56	0.7%
99	Search Insert Position	Easy	56	0.5%
100	Set Matrix Zeroes	Medium	56	0.6%
101	Remove Element	Easy	56	0.6%
102	Contains Duplicate	Easy	56	0.6%
103	Find the Duplicate Number	Medium	56	0.6%
104	Binary Tree Level Order Traversal	Medium	55	0.7%
105	Next Greater Element II	Medium	55	0.7%
106	Missing Number	Easy	55	0.7%
107	First Unique Character in a String	Easy	55	0.7%
108	Pow(x, n)	Medium	54	0.4%
109	Candy	Hard	54	0.5%
110	Word Search II	Hard	54	0.4%
111	Combination Sum	Medium	54	0.8%
112	Permutations	Medium	54	0.8%
113	Gas Station	Medium	54	0.5%
114	String Compression	Medium	54	0.6%
115	Find the Index of the First Occurrence in a String	Easy	54	0.5%
116	Two Sum II - Input Array Is Sorted	Medium	54	0.7%
117	Concatenated Words	Hard	54	0.5%
118	String to Integer (atoi)	Medium	53	0.2%
119	Integer to Roman	Medium	53	0.7%
120	Reorder List	Medium	53	0.7%
121	Maximum Product Subarray	Medium	53	0.4%
122	Flood Fill	Easy	53	0.7%
123	Validate Binary Search Tree	Medium	53	0.4%
124	Longest Increasing Subsequence	Medium	53	0.6%
125	Next Greater Element I	Easy	53	0.8%
126	Basic Calculator	Hard	53	0.5%
127	Integer to English Words	Hard	53	0.4%
128	Remove Nth Node From End of List	Medium	52	0.5%
129	Valid Palindrome	Easy	52	0.5%
130	Diameter of Binary Tree	Easy	52	0.7%
131	Middle of the Linked List	Easy	52	0.8%
132	Linked List Cycle	Easy	52	0.5%
133	Odd Even Linked List	Medium	52	0.6%
134	Word Break II	Hard	52	0.6%
135	Reverse Words in a String	Medium	52	0.6%
136	Plus One	Easy	51	0.5%
137	Edit Distance	Medium	51	0.6%
138	Partition Equal Subset Sum	Medium	51	0.5%
139	Maximum Profit in Job Scheduling	Hard	51	0.5%
140	3Sum Closest	Medium	51	0.5%
141	Basic Calculator II	Medium	51	0.5%
142	Search a 2D Matrix II	Medium	51	0.6%
143	Intersection of Two Arrays	Easy	51	0.8%
144	Split Array Largest Sum	Hard	51	0.6%
145	Number of Provinces	Medium	51	0.7%
146	Sum of Subarray Minimums	Medium	51	0.4%
147	Palindrome Partitioning	Medium	50	0.7%
148	Happy Number	Easy	50	0.6%
149	Evaluate Division	Medium	50	0.6%
150	Balanced Binary Tree	Easy	50	0.6%
151	Largest Number	Medium	50	0.4%
152	Contains Duplicate II	Easy	50	0.5%
153	Fibonacci Number	Easy	50	0.7%
154	Plates Between Candles	Medium	50	0.5%
155	Longest Valid Parentheses	Hard	50	0.4%
156	Rotate List	Medium	50	0.4%
157	Max Consecutive Ones	Easy	50	0.7%
158	K Closest Points to Origin	Medium	50	0.7%
159	Sudoku Solver	Hard	49	0.7%
160	Check if Array Is Sorted and Rotated	Easy	49	0.6%
161	Maximum Frequency After Subarray Operation	Medium	49	0.3%
162	Combine Two Tables	Easy	49	0.8%
163	Minimum Size Subarray Sum	Medium	49	0.5%
164	Decode String	Medium	49	0.6%
165	Evaluate Reverse Polish Notation	Medium	48	0.6%
166	Time Based Key-Value Store	Medium	48	0.5%
167	Isomorphic Strings	Easy	48	0.5%
168	Peak Index in a Mountain Array	Medium	48	0.7%
169	Search Suggestions System	Medium	48	0.7%
170	Add Binary	Easy	48	0.6%
171	Remove Duplicates from Sorted Array II	Medium	48	0.6%
172	Symmetric Tree	Easy	48	0.6%
173	Make Array Zero by Subtracting Equal Amounts	Easy	48	0.7%
174	Maximum Depth of Binary Tree	Easy	47	0.8%
175	Intersection of Two Linked Lists	Easy	47	0.6%
176	Second Highest Salary	Medium	47	0.5%
177	Count Primes	Medium	47	0.4%
178	Rotate String	Easy	47	0.7%
179	Subarrays with K Different Integers	Hard	47	0.7%
180	Same Tree	Easy	47	0.7%
181	Construct Binary Tree from Preorder and Inorder Traversal	Medium	47	0.7%
182	Find Minimum in Rotated Sorted Array	Medium	47	0.5%
183	Find All Anagrams in a String	Medium	47	0.5%
184	Concatenation of Array	Easy	47	0.9%
185	Word Ladder II	Hard	46	0.3%
186	Lowest Common Ancestor of a Binary Search Tree	Medium	46	0.7%
187	Fizz Buzz	Easy	46	0.8%
188	Maximum Width of Binary Tree	Medium	46	0.5%
189	Vertical Order Traversal of a Binary Tree	Hard	46	0.5%
190	Permutation in String	Medium	46	0.5%
191	Random Pick with Weight	Medium	46	0.5%
192	Article Views I	Easy	46	0.8%
193	The kth Factor of n	Medium	46	0.7%
194	Reverse Linked List II	Medium	45	0.5%
195	Surrounded Regions	Medium	45	0.5%
196	Employees Earning More Than Their Managers	Easy	45	0.7%
197	Find K Closest Elements	Medium	45	0.5%
198	Lowest Common Ancestor of a Binary Tree III	Medium	45	0.8%
199	Minimum Health to Beat Game	Medium	45	0.6%
200	Minimum Path Sum	Medium	45	0.7%
201	Simplify Path	Medium	45	0.5%
202	Populating Next Right Pointers in Each Node	Medium	45	0.7%
203	Reverse String	Easy	45	0.8%
204	Pacific Atlantic Water Flow	Medium	45	0.6%
205	Rearrange Array Elements by Sign	Medium	45	0.8%
206	Minimum Time to Complete All Deliveries	Medium	45	0.4%
207	Subsets II	Medium	44	0.6%
208	Linked List Cycle II	Medium	44	0.6%
209	Sort List	Medium	44	0.6%
210	Kth Smallest Element in a BST	Medium	44	0.8%
211	Target Sum	Medium	44	0.5%
212	Top K Frequent Words	Medium	44	0.6%
213	Maximal Rectangle	Hard	44	0.6%
214	Reverse Pairs	Hard	44	0.3%
215	Min Cost Climbing Stairs	Easy	44	0.7%
216	Partition Labels	Medium	44	0.8%
217	Online Stock Span	Medium	44	0.7%
218	Divide Two Integers	Medium	43	0.2%
219	Sort Characters By Frequency	Medium	43	0.8%
220	Managers with at Least 5 Direct Reports	Medium	43	0.5%
221	Binary Search	Easy	43	0.6%
222	Cheapest Flights Within K Stops	Medium	43	0.4%
223	Squares of a Sorted Array	Easy	43	0.7%
224	Design Parking System	Easy	43	0.9%
225	Average Time of Process per Machine	Easy	43	0.7%
226	Length of Last Word	Easy	43	0.6%
227	Invert Binary Tree	Easy	43	0.8%
228	House Robber III	Medium	43	0.6%
229	Remove Duplicates from Sorted List	Easy	42	0.6%
230	Majority Element II	Medium	42	0.6%
231	Valid Palindrome II	Easy	42	0.4%
232	Kth Largest Element in a Stream	Easy	42	0.6%
233	Boats to Save People	Medium	42	0.6%
234	Minimum Number of Days to Make m Bouquets	Medium	42	0.6%
235	Find Triangular Sum of an Array	Medium	42	0.8%
236	Remove K Digits	Medium	42	0.4%
237	Non-overlapping Intervals	Medium	42	0.6%
238	Contiguous Array	Medium	42	0.5%
239	Set Mismatch	Easy	42	0.4%
240	Snakes and Ladders	Medium	42	0.5%
241	Critical Connections in a Network	Hard	42	0.6%
242	Frequency of the Most Frequent Element	Medium	42	0.4%
243	Swap Nodes in Pairs	Medium	41	0.7%
244	Rising Temperature	Easy	41	0.5%
245	Is Subsequence	Easy	41	0.5%
246	Trapping Rain Water II	Hard	41	0.6%
247	Count and Say	Medium	40	0.6%
248	Longest Palindromic Subsequence	Medium	40	0.7%
249	Big Countries	Easy	40	0.7%
250	Smallest Range Covering Elements from K Lists	Hard	40	0.7%
251	Open the Lock	Medium	40	0.6%
252	Sort an Array	Medium	40	0.6%
253	Maximum Width Ramp	Medium	40	0.6%
254	Maximum Number of Vowels in a Substring of Given Length	Medium	40	0.6%
255	Furthest Building You Can Reach	Medium	40	0.5%
256	Add Two Integers	Easy	40	0.9%
257	Decode Ways	Medium	40	0.4%
258	Binary Tree Inorder Traversal	Easy	40	0.8%
259	House Robber II	Medium	40	0.5%
260	Design Twitter	Medium	40	0.4%
261	Can Place Flowers	Easy	40	0.3%
262	Exclusive Time of Functions	Medium	40	0.7%
263	Palindromic Substrings	Medium	40	0.7%
264	Accounts Merge	Medium	40	0.6%
265	Design HashMap	Easy	40	0.7%
266	Making A Large Island	Hard	40	0.6%
267	Greatest Common Divisor of Strings	Easy	40	0.5%
268	Product Sales Analysis III	Medium	40	0.5%
269	Average Selling Price	Easy	40	0.4%
270	Kth Missing Positive Number	Easy	40	0.6%
271	Maximum Units on a Truck	Easy	40	0.7%
272	Combination Sum II	Medium	39	0.6%
273	Unique Paths II	Medium	39	0.4%
274	Triangle	Medium	39	0.6%
275	Implement Trie (Prefix Tree)	Medium	39	0.7%
276	Power of Two	Easy	39	0.5%
277	Implement Queue using Stacks	Easy	39	0.7%
278	Reverse Vowels of a String	Easy	39	0.6%
279	Assign Cookies	Easy	39	0.6%
280	01 Matrix	Medium	39	0.5%
281	Find Customer Referee	Easy	39	0.7%
282	Monthly Transactions I	Medium	39	0.6%
283	Count Good Numbers	Medium	39	0.6%
284	Maximum Sum of Distinct Subarrays With Length K	Medium	39	0.4%
285	Search in Rotated Sorted Array II	Medium	38	0.4%
286	Delete Node in a Linked List	Medium	38	0.8%
287	Design Tic-Tac-Toe	Medium	38	0.6%
288	Russian Doll Envelopes	Hard	38	0.4%
289	Delete Node in a BST	Medium	38	0.5%
290	Maximum Average Subarray I	Easy	38	0.5%
291	Max Area of Island	Medium	38	0.7%
292	Kids With the Greatest Number of Candies	Easy	38	0.9%
293	Maximum Points You Can Obtain from Cards	Medium	38	0.6%
294	Running Sum of 1d Array	Easy	38	0.9%
295	Sum of Subarray Ranges	Medium	38	0.6%
296	Sum of Total Strength of Wizards	Hard	38	0.3%
297	Recover Binary Search Tree	Medium	38	0.6%
298	Convert Sorted Array to Binary Search Tree	Easy	38	0.8%
299	Clone Graph	Medium	38	0.7%
300	Find K Pairs with Smallest Sums	Medium	38	0.4%
301	Ransom Note	Easy	38	0.7%
302	Design In-Memory File System	Hard	38	0.5%
303	Number of Distinct Islands	Medium	38	0.6%
304	Shortest Path in Binary Matrix	Medium	38	0.5%
305	Longest Common Subsequence	Medium	38	0.6%
306	Unique Number of Occurrences	Easy	38	0.8%
307	Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit	Medium	38	0.6%
308	Find Missing and Repeated Values	Easy	38	0.8%
309	Minimum Difference in Sums After Removal of Elements	Hard	38	0.7%
310	Wildcard Matching	Hard	37	0.3%
311	Partition List	Medium	37	0.6%
312	Flatten Binary Tree to Linked List	Medium	37	0.7%
313	Design Add and Search Words Data Structure	Medium	37	0.5%
314	Maximal Square	Medium	37	0.5%
315	Alien Dictionary	Hard	37	0.4%
316	First Bad Version	Easy	37	0.5%
317	Increasing Triplet Subsequence	Medium	37	0.4%
318	Sum of Two Integers	Medium	37	0.6%
319	Diagonal Traverse	Medium	37	0.7%
320	Coin Change II	Medium	37	0.6%
321	Valid Parenthesis String	Medium	37	0.4%
322	Subarray Product Less Than K	Medium	37	0.5%
323	First Unique Number	Medium	37	0.6%
324	Amount of Time for Binary Tree to Be Infected	Medium	37	0.7%
325	Maximum K to Sort a Permutation	Medium	37	0.4%
326	Lexicographically Smallest Negated Permutation that Sums to Target	Medium	37	0.3%
327	Insert Interval	Medium	36	0.5%
328	Interleaving String	Medium	36	0.4%
329	Single Number II	Medium	36	0.7%
330	Repeated Substring Pattern	Easy	36	0.5%
331	Swapping Nodes in a Linked List	Medium	36	0.7%
332	Is Graph Bipartite?	Medium	36	0.6%
333	Bus Routes	Hard	36	0.5%
334	Design Circular Queue	Medium	36	0.5%
335	Minimum Add to Make Parentheses Valid	Medium	36	0.7%
336	Maximum Sum BST in Binary Tree	Hard	36	0.5%
337	Process String with Special Operations I	Medium	36	0.7%
338	Text Justification	Hard	35	0.5%
339	Distinct Subsequences	Hard	35	0.5%
340	Number of Connected Components in an Undirected Graph	Medium	35	0.7%
341	Boundary of Binary Tree	Medium	35	0.5%
342	Count Binary Substrings	Easy	35	0.7%
343	Jewels and Stones	Easy	35	0.9%
344	Find the Smallest Divisor Given a Threshold	Medium	35	0.7%
345	Replace Employee ID With The Unique Identifier	Easy	35	0.8%
346	Apply Discount to Prices	Medium	35	0.3%
347	Most Expensive Item That Can Not Be Bought	Medium	35	0.8%
348	Find Longest Self-Contained Substring	Hard	35	0.6%
349	Find the Number of Possible Ways for an Event	Hard	35	0.4%
350	Minimum Number of Primes to Sum to Target	Medium	35	0.6%
351	Substring with Concatenation of All Words	Hard	34	0.3%
352	Permutations II	Medium	34	0.6%
353	Permutation Sequence	Hard	34	0.5%
354	Compare Version Numbers	Medium	34	0.5%
355	Department Top Three Salaries	Hard	34	0.6%
356	Implement Stack using Queues	Easy	34	0.7%
357	Add Digits	Easy	34	0.7%
358	Range Sum Query - Immutable	Easy	34	0.7%
359	Burst Balloons	Hard	34	0.6%
360	Remove Duplicate Letters	Medium	34	0.5%
361	Find All Numbers Disappeared in an Array	Easy	34	0.6%
362	Find Eventual Safe States	Medium	34	0.7%
363	Reorder Data in Log Files	Medium	34	0.6%
364	Binary Tree Cameras	Hard	34	0.5%
365	Maximum Number of Events That Can Be Attended	Medium	34	0.4%
366	Customer Who Visited but Did Not Make Any Transactions	Easy	34	0.7%
367	Confirmation Rate	Medium	34	0.6%
368	Partition Array According to Given Pivot	Medium	34	0.9%
369	Create a DataFrame from List	Easy	34	0.8%
370	Gray Code	Medium	34	0.7%
371	Rank Scores	Medium	34	0.7%
372	Consecutive Numbers	Medium	34	0.5%
373	Remove Linked List Elements	Easy	34	0.5%
374	Reconstruct Itinerary	Hard	34	0.4%
375	Rotate Function	Medium	34	0.5%
376	Path Sum III	Medium	34	0.5%
377	Next Greater Element III	Medium	34	0.4%
378	Employee Bonus	Easy	34	0.8%
379	Domino and Tromino Tiling	Medium	34	0.5%
380	Binary Subarrays With Sum	Medium	34	0.7%
381	Minimum Falling Path Sum	Medium	34	0.6%
382	Customers Who Bought All Products	Medium	34	0.6%
383	Smallest Subsequence of Distinct Characters	Medium	34	0.6%
384	Replace Elements with Greatest Element on Right Side	Easy	34	0.7%
385	Balance a Binary Search Tree	Medium	34	0.9%
386	Remove All Adjacent Duplicates in String II	Medium	34	0.6%
387	Make Sum Divisible by P	Medium	34	0.4%
388	Removing Stars From a String	Medium	34	0.8%
389	Put Marbles in Bags	Hard	34	0.7%
390	Make String a Subsequence Using Cyclic Increments	Medium	34	0.7%
391	Minimum Number of Pushes to Type Word II	Medium	34	0.8%
392	Count Square Submatrices with All Ones	Medium	34	0.8%
393	Binary Search Tree Iterator	Medium	33	0.8%
394	Dungeon Game	Hard	33	0.4%
395	Nth Highest Salary	Medium	33	0.4%
396	H-Index	Medium	33	0.4%
397	Longest Substring with At Least K Repeating Characters	Medium	33	0.5%
398	Frog Jump	Hard	33	0.5%
399	Third Maximum Number	Easy	33	0.4%
400	Predict the Winner	Medium	33	0.6%
401	Merge Two Binary Trees	Easy	33	0.8%
402	Two Sum IV - Input is a BST	Easy	33	0.6%
403	Find Pivot Index	Easy	33	0.6%
404	Split Linked List in Parts	Medium	33	0.7%
405	Construct Binary Search Tree from Preorder Traversal	Medium	33	0.8%
406	Immediate Food Delivery II	Medium	33	0.6%
407	Students and Examinations	Easy	33	0.6%
408	Maximum Average Pass Ratio	Medium	33	0.7%
409	Substring With Largest Variance	Hard	33	0.5%
410	Using a Robot to Print the Lexicographically Smallest String	Medium	33	0.6%
411	Kth Largest Sum in a Binary Tree	Medium	33	0.6%
412	Distribute Candies Among Children II	Medium	33	0.6%
413	Maximum Number of Groups With Increasing Length	Hard	33	0.2%
414	Minimum Operations to Make Array Non Decreasing	Medium	33	0.6%
415	Multiply Strings	Medium	32	0.4%
416	Unique Binary Search Trees	Medium	32	0.6%
417	Path Sum	Easy	32	0.6%
418	Excel Sheet Column Title	Easy	32	0.5%
419	Different Ways to Add Parentheses	Medium	32	0.7%
420	Kth Smallest Element in a Sorted Matrix	Medium	32	0.6%
421	Add Strings	Easy	32	0.5%
422	Image Smoother	Easy	32	0.7%
423	Baseball Game	Easy	32	0.8%
424	Flatten a Multilevel Doubly Linked List	Medium	32	0.6%
425	Custom Sort String	Medium	32	0.7%
426	Minimum Number of Refueling Stops	Hard	32	0.4%
427	Binary Search Tree to Greater Sum Tree	Medium	32	0.9%
428	Remove All Adjacent Duplicates In String	Easy	32	0.7%
429	Product Sales Analysis I	Easy	32	0.9%
430	Number of Equivalent Domino Pairs	Easy	32	0.6%
431	Angle Between Hands of a Clock	Medium	32	0.7%
432	Count Negative Numbers in a Sorted Matrix	Easy	32	0.8%
433	Path Crossing	Easy	32	0.6%
434	Magnetic Force Between Two Balls	Medium	32	0.7%
435	Sum of Beauty of All Substrings	Medium	32	0.7%
436	Sum of All Subset XOR Totals	Easy	32	0.9%
437	Count Number of Rectangles Containing Each Point	Medium	32	0.4%
438	Best Poker Hand	Easy	32	0.6%
439	Max Sum of a Pair With Equal Sum of Digits	Medium	32	0.7%
440	Maximum Number of Books You Can Take	Hard	32	0.4%
441	Maximum Coins From K Consecutive Bags	Medium	32	0.3%
442	Count Bowl Subarrays	Medium	32	0.5%
443	Sell Diminishing-Valued Colored Balls	Medium	32	0.3%
444	Longest Arithmetic Sequence After Changing At Most One Element	Medium	32	0.2%
445	Spiral Matrix II	Medium	30	0.8%
446	Combinations	Medium	30	0.7%
447	Best Time to Buy and Sell Stock III	Hard	30	0.5%
448	Palindrome Partitioning II	Hard	30	0.4%
449	Customers Who Never Order	Easy	30	0.7%
450	Reverse Bits	Easy	30	0.7%
451	Summary Ranges	Easy	30	0.5%
452	Find All Duplicates in an Array	Medium	30	0.8%
453	Maximum Length of Pair Chain	Medium	30	0.6%
454	Loud and Rich	Medium	30	0.6%
455	Sort Array By Parity II	Easy	30	0.7%
456	Flip String to Monotone Increasing	Medium	30	0.6%
457	Remove Outermost Parentheses	Easy	30	0.9%
458	Recover a Tree From Preorder Traversal	Hard	30	0.8%
459	Longest Duplicate Substring	Hard	30	0.3%
460	Shortest Path with Alternating Colors	Medium	30	0.5%
461	Shortest Path in a Grid with Obstacles Elimination	Hard	30	0.5%
462	Minimum Cost to Cut a Stick	Hard	30	0.6%
463	Design an Expression Tree With Evaluate Function	Medium	30	0.8%
464	Find Minimum Time to Finish All Jobs	Hard	30	0.5%
465	The Number of the Smallest Unoccupied Chair	Medium	30	0.6%
466	Minimum Swaps to Group All 1's Together II	Medium	30	0.7%
467	Number of Ways to Split Array	Medium	30	0.6%
468	Move Pieces to Obtain a String	Medium	30	0.6%
469	Cousins in Binary Tree II	Medium	30	0.8%
470	Length of Longest V-Shaped Diagonal Segment	Hard	30	0.6%
471	Path Sum II	Medium	29	0.6%
472	Pascal's Triangle II	Easy	29	0.7%
473	Shortest Palindrome	Hard	29	0.4%
474	Meeting Rooms	Easy	29	0.6%
475	Perfect Squares	Medium	29	0.6%
476	Find the Difference	Easy	29	0.6%
477	All O`one Data Structure	Hard	29	0.4%
478	132 Pattern	Medium	29	0.3%
479	Most Frequent Subtree Sum	Medium	29	0.7%
480	Convert BST to Greater Tree	Medium	29	0.7%
481	Lemonade Change	Easy	29	0.6%
482	Minimum Cost For Tickets	Medium	29	0.7%
483	Interval List Intersections	Medium	29	0.7%
484	Maximum Difference Between Node and Ancestor	Medium	29	0.8%
485	Actors and Directors Who Cooperated At Least Three Times	Easy	29	0.7%
486	Shortest Common Supersequence	Hard	29	0.6%
487	Sales Analysis III	Easy	29	0.5%
488	Number of Dice Rolls With Target Sum	Medium	29	0.6%
489	List the Products Ordered in a Period	Easy	29	0.7%
490	Shuffle the Array	Easy	29	0.9%
491	Clone Binary Tree With Random Pointer	Medium	29	0.8%
492	Shortest Subarray to be Removed to Make Array Sorted	Medium	29	0.5%
493	Lowest Common Ancestor of a Binary Tree IV	Medium	29	0.8%
494	Find the Highest Altitude	Easy	29	0.8%
495	Determine Whether Matrix Can Be Obtained By Rotation	Easy	29	0.7%
496	Count Number of Pairs With Absolute Difference K	Easy	29	0.9%
497	GCD Sort of an Array	Hard	29	0.5%
498	Partition Array Into Two Arrays to Minimize Sum Difference	Hard	29	0.2%
499	Number of Ways to Select Buildings	Medium	29	0.5%
500	Total Appeal of A String	Hard	29	0.6%
501	Minimum Rounds to Complete All Tasks	Medium	29	0.6%
502	Partition Array Such That Maximum Difference Is K	Medium	29	0.8%
503	Count Unreachable Pairs of Nodes in an Undirected Graph	Medium	29	0.5%
504	Smallest Number in Infinite Set	Medium	29	0.7%
505	Maximum Number of Robots Within Budget	Hard	29	0.4%
506	Construct Smallest Number From DI String	Medium	29	0.9%
507	Find the K-Sum of an Array	Hard	29	0.4%
508	Minimum Adjacent Swaps to Make a Valid Array	Medium	29	0.7%
509	Meeting Rooms III	Hard	29	0.5%
510	Strictly Palindromic Number	Medium	29	0.9%
511	Minimum Number of Operations to Sort a Binary Tree by Level	Medium	29	0.7%
512	Design Memory Allocator	Medium	29	0.5%
513	Count the Number of Special Characters I	Easy	29	0.8%
514	Maximum Sum With at Most K Elements	Medium	29	0.6%
515	Minimum Operations to Make the Array Alternating	Medium	29	0.4%
516	Count Subarrays With Median K	Hard	29	0.5%
517	Minimum Swaps to Avoid Forbidden Values	Hard	29	0.3%
518	Divide an Array Into Subarrays With Minimum Cost I	Easy	29	0.8%
519	Duplicate Emails	Easy	28	0.7%
520	Reverse Words in a String II	Medium	28	0.6%
521	Repeated DNA Sequences	Medium	28	0.5%
522	Combination Sum III	Medium	28	0.7%
523	Find the Celebrity	Medium	28	0.5%
524	Longest Increasing Path in a Matrix	Hard	28	0.6%
525	Arranging Coins	Easy	28	0.5%
526	Serialize and Deserialize BST	Medium	28	0.6%
527	Heaters	Medium	28	0.4%
528	Super Washing Machines	Hard	28	0.4%
529	Continuous Subarray Sum	Medium	28	0.3%
530	Minesweeper	Medium	28	0.7%
531	K-diff Pairs in an Array	Medium	28	0.5%
532	Encode and Decode TinyURL	Medium	28	0.9%
533	Reverse Words in a String III	Easy	28	0.8%
534	Array Partition	Easy	28	0.8%
535	Exchange Seats	Medium	28	0.7%
536	Number of Distinct Islands II	Hard	28	0.6%
537	Most Common Word	Easy	28	0.5%
538	Keys and Rooms	Medium	28	0.8%
539	Car Fleet	Medium	28	0.6%
540	Orderly Queue	Hard	28	0.7%
541	Most Stones Removed with Same Row or Column	Medium	28	0.6%
542	Sum of Root To Leaf Binary Numbers	Easy	28	0.8%
543	Uncrossed Lines	Medium	28	0.7%
544	Last Stone Weight	Easy	28	0.7%
545	Product Price at a Given Date	Medium	28	0.6%
546	Reformat Department Table	Easy	28	0.8%
547	Maximum Score Words Formed by Letters	Hard	28	0.8%
548	Fair Distribution of Cookies	Medium	28	0.7%
549	Count Number of Teams	Medium	28	0.7%
550	Allocate Mailboxes	Hard	28	0.6%
551	Min Cost to Connect All Points	Medium	28	0.7%
552	Concatenation of Consecutive Binary Numbers	Medium	28	0.7%
553	Number of Students Unable to Eat Lunch	Easy	28	0.8%
554	Maximum Erasure Value	Medium	28	0.6%
555	Unique Length-3 Palindromic Subsequences	Medium	28	0.7%
556	Find if Path Exists in Graph	Easy	28	0.6%
557	Find All Possible Recipes from Given Supplies	Medium	28	0.6%
558	Number of Smooth Descent Periods of a Stock	Medium	28	0.7%
559	Count the Hidden Sequences	Medium	28	0.6%
560	Minimum Sum of Four Digit Number After Splitting Digits	Easy	28	0.9%
561	Minimum Sum of Squared Difference	Medium	28	0.3%
562	Optimal Partition of String	Medium	28	0.8%
563	Remove Nodes From Linked List	Medium	28	0.8%
564	To Be Or Not To Be	Easy	28	0.6%
565	Count Stepping Numbers in Range	Hard	28	0.3%
566	Count Beautiful Substrings I	Medium	28	0.6%
567	Maximize Happiness of Selected Children	Medium	28	0.6%
568	Generate Binary Strings Without Adjacent Zeros	Medium	28	0.9%
569	N-Queens II	Hard	27	0.8%
570	Valid Number	Hard	27	0.2%
571	Sum Root to Leaf Numbers	Medium	27	0.7%
572	Max Points on a Line	Hard	27	0.3%
573	Number of 1 Bits	Easy	27	0.8%
574	Number of Digit One	Hard	27	0.4%
575	Ugly Number	Easy	27	0.4%
576	Binary Tree Vertical Order Traversal	Medium	27	0.6%
577	Bulb Switcher	Medium	27	0.6%
578	Counting Bits	Easy	27	0.8%
579	Flatten Nested List Iterator	Medium	27	0.7%
580	Logger Rate Limiter	Easy	27	0.8%
581	Design Hit Counter	Medium	27	0.7%
582	Longest Palindrome	Easy	27	0.6%
583	Minimum Genetic Mutation	Medium	27	0.6%
584	Maximum Alternating Subarray Sum	Medium	27	0.4%
585	Subtree of Another Tree	Easy	27	0.5%
586	Solve the Equation	Medium	27	0.5%
587	Cut Off Trees for Golf Event	Hard	27	0.4%
588	Redundant Connection	Medium	27	0.7%
589	Partition to K Equal Sum Subsets	Medium	27	0.4%
590	Find K-th Smallest Pair Distance	Hard	27	0.5%
591	Network Delay Time	Medium	27	0.6%
592	All Paths From Source to Target	Medium	27	0.8%
593	Backspace String Compare	Easy	27	0.5%
594	Shortest Subarray with Sum at Least K	Hard	27	0.3%
595	Find and Replace Pattern	Medium	27	0.8%
596	Maximum Sum Circular Subarray	Medium	27	0.5%
597	Number of Recent Calls	Easy	27	0.8%
598	Subarray Sums Divisible by K	Medium	27	0.6%
599	Longest Repeating Substring	Medium	27	0.6%
600	High Five	Easy	27	0.7%
601	Two Sum Less Than K	Easy	27	0.6%
602	Path With Maximum Minimum Value	Medium	27	0.5%
603	Design File System	Medium	27	0.7%
604	Distant Barcodes	Medium	27	0.5%
605	Two Sum BSTs	Medium	27	0.7%
606	Sum of Nodes with Even-Valued Grandparent	Medium	27	0.9%
607	Get Watched Videos by Your Friends	Medium	27	0.5%
608	Number of Operations to Make Network Connected	Medium	27	0.7%
609	Remove Palindromic Subsequences	Easy	27	0.8%
610	The K Weakest Rows in a Matrix	Easy	27	0.7%
611	How Many Numbers Are Smaller Than the Current Number	Easy	27	0.9%
612	Check If Array Pairs Are Divisible by k	Medium	27	0.5%
613	Can Make Arithmetic Progression From Sequence	Easy	27	0.7%
614	Max Number of K-Sum Pairs	Medium	27	0.6%
615	Minimum Length of String After Deleting Similar Ends	Medium	27	0.6%
616	Maximum Element After Decreasing and Rearranging	Medium	27	0.7%
617	Next Palindrome Using Same Digits	Hard	27	0.5%
618	Largest Odd Number in String	Easy	27	0.7%
619	Check for Contradictions in Equations	Hard	27	0.4%
620	Find Missing Observations	Medium	27	0.6%
621	Number of Laser Beams in a Bank	Medium	27	0.9%
622	Maximize Number of Subsequences in a String	Medium	27	0.4%
623	K Divisible Elements Subarrays	Medium	27	0.6%
624	Minimum Average Difference	Medium	27	0.4%
625	Count Number of Texts	Medium	27	0.5%
626	Maximum Consecutive Floors Without Special Floors	Medium	27	0.5%
627	Maximum Bags With Full Capacity of Rocks	Medium	27	0.7%
628	Design a Text Editor	Hard	27	0.5%
629	Design a Food Rating System	Medium	27	0.5%
630	Product Sales Analysis IV	Medium	27	0.8%
631	Maximum Matching of Players With Trainers	Medium	27	0.8%
632	Smallest Subarrays With Maximum Bitwise OR	Medium	27	0.6%
633	Split With Minimum Sum	Easy	27	0.7%
634	Find the Divisibility Array of a String	Medium	27	0.4%
635	Row With Maximum Ones	Easy	27	0.7%
636	Count Zero Request Servers	Medium	27	0.4%
637	Maximize the Profit as the Salesman	Medium	27	0.4%
638	Minimum Number of Operations to Make Array Empty	Medium	27	0.6%
639	Find Maximum Non-decreasing Array Length	Hard	27	0.2%
640	Most Frequent IDs	Medium	27	0.4%
641	Minimum Array Sum	Medium	27	0.3%
642	Minimum Number of Operations to Make Elements in Array Distinct	Easy	27	0.7%
643	Substring Matching Pattern	Easy	27	0.3%
644	Check If Digits Are Equal in String After Operations I	Easy	27	0.8%
645	Count Covered Buildings	Medium	27	0.6%
646	Maximum Total from Optimal Activation Order	Medium	27	0.3%
647	Trionic Array I	Easy	27	0.5%
648	Minimum Removals to Balance Array	Medium	27	0.5%
649	Maximize Fixed Points After Deletions	Hard	27	0.2%
650	Restore IP Addresses	Medium	25	0.6%
651	Unique Binary Search Trees II	Medium	25	0.6%
652	Department Highest Salary	Medium	25	0.6%
653	Walls and Gates	Medium	25	0.6%
654	Power of Three	Easy	25	0.5%
655	Nested List Weight Sum	Medium	25	0.9%
656	Moving Average from Data Stream	Easy	25	0.8%
657	Insert Delete GetRandom O(1) - Duplicates allowed	Hard	25	0.4%
658	Lexicographical Numbers	Medium	25	0.8%
659	Battleships in a Board	Medium	25	0.8%
660	Optimal Division	Medium	25	0.6%
661	Construct String from Binary Tree	Medium	25	0.7%
662	Triangle Judgement	Easy	25	0.7%
663	Design Search Autocomplete System	Hard	25	0.5%
664	My Calendar I	Medium	25	0.6%
665	Monotone Increasing Digits	Medium	25	0.5%
666	Delete and Earn	Medium	25	0.6%
667	Serialize and Deserialize N-ary Tree	Hard	25	0.7%
668	Insert into a Binary Search Tree	Medium	25	0.7%
669	Swim in Rising Water	Hard	25	0.7%
670	Minimum Swaps To Make Sequences Increasing	Hard	25	0.4%
671	Split Array into Fibonacci Sequence	Medium	25	0.4%
672	Maximum Frequency Stack	Hard	25	0.7%
673	Prison Cells After N Days	Medium	25	0.4%
674	Unique Paths III	Hard	25	0.8%
675	Missing Element in Sorted Array	Medium	25	0.6%
676	Connecting Cities With Minimum Cost	Medium	25	0.6%
677	Find Words That Can Be Formed by Characters	Easy	25	0.7%
678	Insufficient Nodes in Root to Leaf Paths	Medium	25	0.6%
679	Handshakes That Don't Cross	Hard	25	0.6%
680	Closest Divisors	Medium	25	0.6%
681	Minimum Garden Perimeter to Collect Enough Apples	Medium	25	0.6%
682	All Elements in Two Binary Search Trees	Medium	25	0.8%
683	Delete Leaves With a Given Value	Medium	25	0.8%
684	Number of Steps to Reduce a Number in Binary Representation to One	Medium	25	0.6%
685	String Matching in an Array	Easy	25	0.7%
686	NPV Queries	Easy	25	0.8%
687	Design Browser History	Medium	25	0.8%
688	Sales by Day of the Week	Hard	25	0.8%
689	Maximum Number of Non-Overlapping Substrings	Hard	25	0.4%
690	Customer Order Frequency	Easy	25	0.7%
691	Find the Index of the Large Integer	Medium	25	0.6%
692	Warehouse Manager	Easy	25	0.9%
693	Maximum Number of Achievable Transfer Requests	Hard	25	0.6%
694	Minimum Operations to Reduce X to Zero	Medium	25	0.4%
695	Decode XORed Permutation	Medium	25	0.7%
696	Form Array by Concatenating Subarrays of Another Array	Medium	25	0.5%
697	The Number of Employees Which Report to Each Employee	Easy	25	0.5%
698	Find Distance in a Binary Tree	Medium	25	0.7%
699	Minimum Degree of a Connected Trio in a Graph	Hard	25	0.4%
700	Closest Room	Hard	25	0.4%
701	Build Array from Permutation	Easy	25	0.9%
702	Longest Common Subpath	Hard	25	0.3%
703	Check if Move is Legal	Medium	25	0.5%
704	Sum of Beauty in the Array	Medium	25	0.5%
705	Kth Distinct String in an Array	Easy	25	0.8%
706	Decode the Slanted Ciphertext	Medium	25	0.7%
707	Find Good Days to Rob the Bank	Medium	25	0.5%
708	Adding Spaces to a String	Medium	25	0.7%
709	Replace Non-Coprime Numbers in Array	Hard	25	0.6%
710	Replace Elements in an Array	Medium	25	0.6%
711	Minimum Score After Removals on a Tree	Hard	25	0.8%
712	Minimum Number of Keypresses	Medium	25	0.7%
713	Find Minimum Time to Finish All Jobs II	Medium	25	0.7%
714	Valid Palindrome IV	Medium	25	0.8%
715	Sum of Number and Its Reverse	Medium	25	0.5%
716	Design SQL	Medium	25	0.6%
717	Append Characters to String to Make Subsequence	Medium	25	0.7%
718	Maximum Star Sum of a Graph	Medium	25	0.4%
719	Difference Between Ones and Zeros in Row and Column	Medium	25	0.8%
720	Customers With Strictly Increasing Purchases	Hard	25	0.5%
721	Time Taken to Cross the Door	Hard	25	0.5%
722	Count the Number of Fair Pairs	Medium	25	0.5%
723	Double a Number Represented as a Linked List	Medium	25	0.6%
724	Length of the Longest Valid Substring	Hard	25	0.4%
725	Find the K-or of an Array	Easy	25	0.7%
726	Find Number of Coins to Place in Tree Nodes	Hard	25	0.4%
727	Minimum Number of Coins to be Added	Medium	25	0.6%
728	Minimum Number of Pushes to Type Word I	Easy	25	0.7%
729	Replace Question Marks in String to Minimize Its Value	Medium	25	0.3%
730	Find Number of Ways to Reach the K-th Stair	Hard	25	0.4%
731	Design an Array Statistics Tracker	Hard	25	0.4%
732	Minimum Number of Moves to Make Palindrome	Hard	25	0.5%
733	Maximize Y‑Sum by Picking a Triplet of Distinct X‑Values	Medium	25	0.6%
734	Maximum Bitwise AND After Increment Operations	Hard	25	0.3%
735	Minimum Operations to Sort a String	Medium	25	0.2%
736	Construct Binary Tree from Inorder and Postorder Traversal	Medium	24	0.7%
737	Delete Duplicate Emails	Easy	24	0.7%
738	The Skyline Problem	Hard	24	0.5%
739	Game of Life	Medium	24	0.7%
740	Word Pattern	Easy	24	0.4%
741	Bulls and Cows	Medium	24	0.5%
742	Largest Divisible Subset	Medium	24	0.5%
743	Valid Word Abbreviation	Easy	24	0.4%
744	IPO	Hard	24	0.5%
745	Construct Binary Tree from String	Medium	24	0.6%
746	Complex Number Multiplication	Medium	24	0.7%
747	Reverse String II	Easy	24	0.5%
748	Find Cumulative Salary of an Employee	Hard	24	0.5%
749	Valid Triangle Number	Medium	24	0.6%
750	2 Keys Keyboard	Medium	24	0.6%
751	Equal Tree Partition	Medium	24	0.4%
752	Maximum Swap	Medium	24	0.5%
753	Max Stack	Hard	24	0.5%
754	Closest Leaf in a Binary Tree	Medium	24	0.5%
755	Prime Number of Set Bits in Binary Representation	Easy	24	0.8%
756	Global and Local Inversions	Medium	24	0.4%
757	Split BST	Medium	24	0.8%
758	Design Linked List	Medium	24	0.3%
759	Numbers At Most N Given Digit Set	Hard	24	0.5%
760	Shortest Bridge	Medium	24	0.6%
761	Distribute Coins in Binary Tree	Medium	24	0.8%
762	Digit Count in Range	Hard	24	0.5%
763	Index Pairs of a String	Easy	24	0.7%
764	Sum of Digits in the Minimum Number	Easy	24	0.8%
765	Find K-Length Substrings With No Repeated Characters	Medium	24	0.8%
766	Number of Days in a Month	Easy	24	0.6%
767	Remove Vowels from a String	Easy	24	0.9%
768	Armstrong Number	Easy	24	0.8%
769	Maximum Average Subtree	Medium	24	0.7%
770	Largest Unique Number	Easy	24	0.7%
771	Number of Submatrices That Sum to Target	Hard	24	0.7%
772	Product Sales Analysis II	Easy	24	0.8%
773	Sales Analysis I	Easy	24	0.7%
774	Sales Analysis II	Easy	24	0.5%
775	Find in Mountain Array	Hard	24	0.4%
776	Parsing A Boolean Expression	Hard	24	0.7%
777	Remove Covered Intervals	Medium	24	0.6%
778	User Activity for the Past 30 Days I	Easy	24	0.5%
779	Snapshot Array	Medium	24	0.4%
780	Largest Multiple of Three	Hard	24	0.3%
781	Prime Arrangements	Easy	24	0.6%
782	Diet Plan Performance	Easy	24	0.6%
783	Maximum Subarray Sum with One Deletion	Medium	24	0.5%
784	Shift 2D Grid	Easy	24	0.7%
785	Find the Team Size	Easy	24	0.9%
786	Restaurant Growth	Medium	24	0.6%
787	Number of Substrings Containing All Three Characters	Medium	24	0.7%
788	Students With Invalid Departments	Easy	24	0.9%
789	Queries on a Permutation With Key	Medium	24	0.8%
790	Pseudo-Palindromic Paths in a Binary Tree	Medium	24	0.7%
791	Reorder Routes to Make All Paths Lead to the City Zero	Medium	24	0.7%
792	Longest Subarray of 1's After Deleting One Element	Medium	24	0.7%
793	Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree	Hard	24	0.7%
794	Number of Subsequences That Satisfy the Given Sum Condition	Medium	24	0.5%
795	Clone N-ary Tree	Medium	24	0.8%
796	Friendly Movies Streamed Last Month	Easy	24	0.5%
797	Minimum Numbers of Function Calls to Make Target Array	Medium	24	0.6%
798	Number of Sets of K Non-Overlapping Line Segments	Medium	24	0.5%
799	Build Binary Expression Tree From Infix Expression	Hard	24	0.6%
800	Maximum Nesting Depth of the Parentheses	Easy	24	0.8%
801	Defuse the Bomb	Easy	24	0.8%
802	Find the Missing IDs	Medium	24	0.7%
803	All Valid Triplets That Can Represent a Country	Easy	24	0.8%
804	Design Front Middle Back Queue	Medium	24	0.6%
805	Add Two Polynomials Represented as Linked Lists	Medium	24	0.6%
806	Invalid Tweets	Easy	24	0.9%
807	Count Ways to Make Array With Product	Hard	24	0.6%
808	Number of Calls Between Two Persons	Medium	24	0.8%
809	Find Nearest Point That Has the Same X or Y Coordinate	Easy	24	0.7%
810	Count Pairs Of Nodes	Hard	24	0.4%
811	Find Total Time Spent by Each Employee	Easy	24	0.9%
812	Sort Features by Popularity	Medium	24	0.7%
813	Product's Price for Each Store	Easy	24	0.8%
814	Grand Slam Titles	Medium	24	0.8%
815	Maximize the Beauty of the Garden	Hard	24	0.7%
816	Rearrange Products Table	Easy	24	0.9%
817	Ad-Free Sessions	Easy	24	0.6%
818	Find Interview Candidates	Medium	24	0.6%
819	Distinct Numbers in Each Subarray	Medium	24	0.8%
820	Minimum Space Wasted From Packaging	Hard	24	0.3%
821	Remove All Occurrences of a Substring	Medium	24	0.8%
822	Find a Peak Element II	Medium	24	0.6%
823	Jump Game VIII	Medium	24	0.5%
824	Maximum of Minimum Values in All Subarrays	Medium	24	0.5%
825	Count Number of Special Subsequences	Hard	24	0.5%
826	Minimize the Difference Between Target and Chosen Elements	Medium	24	0.4%
827	Minimized Maximum of Products Distributed to Any Store	Medium	24	0.6%
828	Sequentially Ordinal Rank Tracker	Hard	24	0.6%
829	Minimum Operations to Make the Array K-Increasing	Hard	24	0.4%
830	Maximum Twin Sum of a Linked List	Medium	24	0.8%
831	Minimum Operations to Remove Adjacent Ones in Matrix	Hard	24	0.4%
832	Append K Integers With Minimal Sum	Medium	24	0.3%
833	Longest Winning Streak	Hard	24	0.5%
834	Sum of Scores of Built Strings	Hard	24	0.5%
835	Maximum Sum Score of Array	Medium	24	0.6%
836	Users With Two Purchases Within Seven Days	Medium	24	0.5%
837	Rearrange Characters to Make Target String	Easy	24	0.6%
838	Number of Times a Driver Was a Passenger	Medium	24	0.7%
839	Products With Three or More Orders in Two Consecutive Years	Medium	24	0.4%
840	Product Sales Analysis V	Easy	24	0.7%
841	Time Needed to Rearrange a Binary String	Medium	24	0.5%
842	Minimum Money Required Before Transactions	Hard	24	0.4%
843	Employees With Deductions	Medium	24	0.4%
844	Number of Distinct Averages	Easy	24	0.6%
845	Merge Operations to Turn Array Into a Palindrome	Medium	24	0.7%
846	Find the Pivot Integer	Easy	24	0.8%
847	Longest Square Streak in an Array	Medium	24	0.5%
848	Find Xor-Beauty of Array	Medium	24	0.7%
849	Count the Number of K-Big Indices	Hard	24	0.5%
850	Find the Substring With Maximum Cost	Medium	24	0.6%
851	Count the Number of K-Free Subsets	Medium	24	0.5%
852	Relocate Marbles	Medium	24	0.5%
853	Maximum Sum of Almost Unique Subarray	Medium	24	0.4%
854	Number of Unique Categories	Medium	24	0.8%
855	Minimum Right Shifts to Sort the Array	Easy	24	0.6%
856	Maximal Range That Each Element Is Maximum in It	Medium	24	0.8%
857	Subarrays Distinct Element Sum of Squares II	Hard	24	0.2%
858	Maximum Linear Stock Score	Medium	24	0.6%
859	Maximum Balanced Subsequence Sum	Hard	24	0.3%
860	Distribute Candies Among Children I	Easy	24	0.8%
861	Make Three Strings Equal	Easy	24	0.5%
862	Count Beautiful Substrings II	Hard	24	0.3%
863	Distribute Candies Among Children III	Hard	24	0.6%
864	Find the Maximum Number of Elements in Subset	Medium	24	0.3%
865	Count Numbers With Unique Digits II	Easy	24	0.9%
866	Find the Number of Subarrays Where Boundary Elements Are Maximum	Hard	24	0.3%
867	Count the Number of Special Characters II	Medium	24	0.6%
868	Minimum Average of Smallest and Largest Elements	Easy	24	0.9%
869	Count Triplets with Even XOR Set Bits I	Easy	24	0.8%
870	Count Triplets with Even XOR Set Bits II	Medium	24	0.6%
871	Magic Squares In Grid	Medium	24	0.6%
872	Percentage of Users Attended a Contest	Easy	24	0.6%
873	Find the Length of the Longest Common Prefix	Medium	24	0.6%
874	Maximum Matrix Sum	Medium	24	0.7%
875	Two Best Non-Overlapping Events	Medium	24	0.6%
876	Max Chunks To Make Sorted	Medium	24	0.6%
877	Count Servers that Communicate	Medium	24	0.7%
878	Shortest Matching Substring	Hard	24	0.2%
879	Maximum Candies Allocated to K Children	Medium	24	0.5%
880	Minimum Stability Factor of Array	Hard	24	0.2%
881	Trionic Array II	Hard	24	0.5%
882	Maximum Capacity Within Budget	Medium	24	0.2%
883	Lexicographically Maximum MEX Array	Hard	24	0.6%
884	Minimum Operations to Sort a Permutation	Medium	24	0.3%
885	Convert Sorted List to Binary Search Tree	Medium	22	0.7%
886	Binary Tree Preorder Traversal	Easy	22	0.8%
887	Binary Tree Postorder Traversal	Easy	22	0.8%
888	Excel Sheet Column Number	Easy	22	0.7%
889	Best Time to Buy and Sell Stock IV	Hard	22	0.5%
890	Binary Tree Paths	Easy	22	0.7%
891	Single Number III	Medium	22	0.7%
892	Encode and Decode Strings	Medium	22	0.5%
893	Range Sum Query 2D - Immutable	Medium	22	0.6%
894	Minimum Number of Arrows to Burst Balloons	Medium	22	0.6%
895	Island Perimeter	Easy	22	0.7%
896	Base 7	Easy	22	0.5%
897	Longest Harmonious Subsequence	Easy	22	0.6%
898	Maximum Product of Three Numbers	Easy	22	0.5%
899	Course Schedule III	Hard	22	0.4%
900	Guess the Word	Hard	22	0.4%
901	Transpose Matrix	Easy	22	0.8%
902	Find the Town Judge	Easy	22	0.5%
903	Minimum Cost to Merge Stones	Hard	22	0.5%
904	Pairs of Songs With Total Durations Divisible by 60	Medium	22	0.5%
905	Game Play Analysis IV	Medium	22	0.4%
906	Car Pooling	Medium	22	0.6%
907	Queries Quality and Percentage	Easy	22	0.5%
908	Remove Sub-Folders from the Filesystem	Medium	22	0.8%
909	Find the Difference of Two Arrays	Easy	22	0.8%
910	Find Winner on a Tic Tac Toe Game	Easy	22	0.5%
911	Minimum Difficulty of a Job Schedule	Hard	22	0.6%
912	Max Dot Product of Two Subsequences	Hard	22	0.7%
913	Path With Minimum Effort	Medium	22	0.6%
914	Maximum Ice Cream Bars	Medium	22	0.8%
915	Find the Prefix Common Array of Two Arrays	Medium	22	0.9%
916	Return Length of Arguments Passed	Easy	22	0.9%
917	Count Elements With Maximum Frequency	Easy	22	0.8%
918	Find the Median of the Uniqueness Array	Hard	22	0.3%
919	Minimum Fuel Cost to Report to the Capital	Medium	22	0.7%
920	Delete Nodes From Linked List Present in Array	Medium	22	0.7%
921	Count Vowel Strings in Ranges	Medium	22	0.7%
922	Number of Zero-Filled Subarrays	Medium	22	0.7%
923	Course Schedule IV	Medium	22	0.6%
924	Final Prices With a Special Discount in a Shop	Easy	22	0.8%
925	House Robber IV	Medium	22	0.6%
926	Minimum Distance to the Target Element	Easy	22	0.6%
927	Minimum Time to Activate String	Medium	22	0.5%
928	Maximum Median Sum of Subsequences of Size 3	Medium	22	0.7%
929	Avoid Flood in The City	Medium	22	0.4%
930	Minimum Number of Groups to Create a Valid Assignment	Medium	22	0.3%
931	Minimize Array Sum Using Divisible Replacements	Medium	22	0.3%
932	Minimum Flips to Make Binary String Coherent	Medium	22	0.2%
933	Scramble String	Hard	20	0.4%
934	Minimum Depth of Binary Tree	Easy	20	0.5%
935	Populating Next Right Pointers in Each Node II	Medium	20	0.6%
936	Factorial Trailing Zeroes	Medium	20	0.5%
937	Trips and Users	Hard	20	0.4%
938	Ugly Number II	Medium	20	0.5%
939	Minimum Height Trees	Medium	20	0.4%
940	Count of Smaller Numbers After Self	Hard	20	0.4%
941	Intersection of Two Arrays II	Easy	20	0.6%
942	Valid Perfect Square	Easy	20	0.5%
943	Elimination Game	Medium	20	0.5%
944	Add Two Numbers II	Medium	20	0.6%
945	Sum of Square Numbers	Medium	20	0.4%
946	Find Duplicate Subtrees	Medium	20	0.6%
947	Search in a Binary Search Tree	Easy	20	0.8%
948	Basic Calculator III	Hard	20	0.5%
949	Nth Magical Number	Hard	20	0.4%
950	Valid Mountain Array	Easy	20	0.4%
951	Find Common Characters	Easy	20	0.7%
952	Minimum Cost to Connect Sticks	Medium	20	0.7%
953	N-th Tribonacci Number	Easy	20	0.6%
954	Longest Happy String	Medium	20	0.7%
955	Number of Visible People in a Queue	Hard	20	0.7%
956	Minimum Remove to Make Valid Parentheses	Medium	20	0.7%
957	Find N Unique Integers Sum up to Zero	Easy	20	0.8%
958	Longest Happy Prefix	Hard	20	0.5%
959	Number of Good Pairs	Easy	20	0.9%
960	Sort Array by Increasing Frequency	Easy	20	0.8%
961	Nearest Exit from Entrance in Maze	Medium	20	0.5%
962	Number of Ways to Arrive at Destination	Medium	20	0.4%
963	Minimum Number of Swaps to Make the String Balanced	Medium	20	0.8%
964	Minimum Difference Between Highest and Lowest of K Scores	Easy	20	0.7%
965	Create Binary Tree From Descriptions	Medium	20	0.8%
966	Successful Pairs of Spells and Potions	Medium	20	0.5%
967	Count Number of Bad Pairs	Medium	20	0.5%
968	Counter	Easy	20	0.8%
969	Filter Elements from Array	Easy	20	0.9%
970	Find the Maximum Achievable Number	Easy	20	0.9%
971	Parallel Courses III	Hard	20	0.7%
972	Clear Digits	Easy	20	0.8%
973	Separate Squares I	Medium	20	0.6%
974	Lexicographically Minimum String After Removing Stars	Medium	20	0.5%
975	Greatest Sum Divisible by Three	Medium	20	0.6%
976	Count Subarrays of Length Three With a Condition	Easy	20	0.6%
977	Count the Number of Substrings With Dominant Ones	Medium	20	0.4%
978	Find the K-th Character in String Game I	Easy	20	0.8%
979	Find the Maximum Length of Valid Subsequence I	Medium	20	0.5%
980	Soup Servings	Medium	20	0.6%
981	Threshold Majority Queries	Hard	20	0.2%
982	New 21 Game	Medium	20	0.5%
983	Find the Minimum Area to Cover All Ones II	Hard	20	0.6%
984	Minimum Sensors to Cover Grid	Medium	20	0.7%
985	Maximum Calories Burnt from Jumps	Medium	20	0.7%
986	Maximize Points After Choosing K Tasks	Medium	20	0.6%
987	Total Sum of Interaction Cost in Tree Groups	Hard	20	0.5%
988	Maximum Score After Binary Swaps	Medium	20	0.4%
989	Reverse String Prefix	Easy	20	0.9%
990	Minimum Cost to Partition a Binary String	Hard	20	0.5%
991	Sum of GCD of Formed Pairs	Medium	20	0.7%
992	Maximum Total Value of Covered Indices	Medium	20	0.3%
993	Valid Phone Numbers	Easy	18	0.3%
994	Longest Substring with At Most K Distinct Characters	Medium	18	0.5%
995	Power of Four	Easy	18	0.5%
996	Sum of Left Leaves	Easy	18	0.6%
997	Sliding Window Median	Hard	18	0.4%
998	Perfect Number	Easy	18	0.5%
999	Find Largest Value in Each Tree Row	Medium	18	0.7%
1000	Minimum Time Difference	Medium	18	0.6%
1001	Find the Closest Palindrome	Hard	18	0.3%
1002	Human Traffic of Stadium	Hard	18	0.5%
1003	Trim a Binary Search Tree	Medium	18	0.7%
1004	Number of Atoms	Hard	18	0.7%
1005	Maximize Distance to Closest Person	Medium	18	0.5%
1006	Reordered Power of 2	Medium	18	0.7%
1007	Walking Robot Simulation	Medium	18	0.6%
1008	Next Greater Node In Linked List	Medium	18	0.6%
1009	Robot Bounded In Circle	Medium	18	0.6%
1010	Grumpy Bookstore Owner	Medium	18	0.6%
1011	Minimum Knight Moves	Medium	18	0.4%
1012	Count Number of Nice Subarrays	Medium	18	0.8%
1013	Find Numbers with Even Number of Digits	Easy	18	0.8%
1014	Check If N and Its Double Exist	Easy	18	0.4%
1015	Movie Rating	Medium	18	0.4%
1016	Count Good Nodes in Binary Tree	Medium	18	0.7%
1017	Minimum Difference Between Largest and Smallest Value in Three Moves	Medium	18	0.6%
1018	Matrix Diagonal Sum	Easy	18	0.8%
1019	Sum of Absolute Differences in a Sorted Array	Medium	18	0.7%
1020	Maximum Number of Events That Can Be Attended II	Hard	18	0.6%
1021	Minimum Limit of Balls in a Bag	Medium	18	0.7%
1022	Buildings With an Ocean View	Medium	18	0.8%
1023	Find the Winner of the Circular Game	Medium	18	0.8%
1024	Detonate the Maximum Bombs	Medium	18	0.5%
1025	Delete the Middle Node of a Linked List	Medium	18	0.6%
1026	Check if a Parentheses String Can Be Valid	Medium	18	0.5%
1027	Longest Nice Subarray	Medium	18	0.6%
1028	Smallest Even Multiple	Easy	18	0.9%
1029	Continuous Subarrays	Medium	18	0.6%
1030	Score of a String	Easy	18	0.9%
1031	Nth Digit	Medium	18	0.4%
1032	Minimum Cost to Convert String II	Hard	18	0.6%
1033	Finding 3-Digit Even Numbers	Easy	18	0.8%
1034	Longest Subarray With Maximum Bitwise AND	Medium	18	0.7%
1035	Lexicographically Smallest String After Applying Operations	Medium	18	0.8%
1036	String Compression III	Medium	18	0.7%
1037	Last Stone Weight II	Medium	18	0.6%
1038	Separate Black and White Balls	Medium	18	0.6%
1039	K-th Smallest in Lexicographical Order	Hard	18	0.5%
1040	Most Beautiful Item for Each Query	Medium	18	0.6%
1041	Jump Game VII	Medium	18	0.4%
1042	Largest 1-Bordered Square	Medium	18	0.5%
1043	Maximum Sum of 3 Non-Overlapping Subarrays	Hard	18	0.6%
1044	Special Binary String	Hard	18	0.8%
1045	Nim Game	Easy	18	0.6%
1046	Word Subsets	Medium	18	0.6%
1047	Maximum Performance of a Team	Hard	18	0.5%
1048	Even Odd Tree	Medium	18	0.7%
1049	Maximum Absolute Sum of Any Subarray	Medium	18	0.7%
1050	Robot Return to Origin	Easy	18	0.8%
1051	Insertion Sort List	Medium	18	0.6%
1052	Detect Cycles in 2D Grid	Medium	18	0.6%
1053	Possible Bipartition	Medium	18	0.5%
1054	Unique 3-Digit Even Numbers	Easy	18	0.7%
1055	Maximum Number of Tasks You Can Assign	Hard	18	0.5%
1056	Minimum Equal Sum of Two Arrays After Replacing Zeros	Medium	18	0.5%
1057	Total Characters in String After Transformations I	Medium	18	0.5%
1058	Lexicographically Smallest Equivalent String	Medium	18	0.8%
1059	Find All K-Distant Indices in an Array	Easy	18	0.8%
1060	Kth Smallest Product of Two Sorted Arrays	Hard	18	0.5%
1061	Minimum Cost to Reach Destination in Time	Hard	18	0.4%
1062	Reschedule Meetings for Maximum Free Time I	Medium	18	0.5%
1063	Fix Names in a Table	Easy	18	0.6%
1064	Maximize Subarrays After Removing One Conflicting Pair	Hard	18	0.6%
1065	Fruits Into Baskets II	Easy	18	0.7%
1066	Rotating the Box	Medium	18	0.8%
1067	Vowel Spellchecker	Medium	18	0.6%
1068	Lexicographically Smallest Permutation Greater Than Target	Medium	18	0.3%
1069	Transformed Array	Easy	18	0.7%
1070	Longest Balanced Substring I	Medium	18	0.7%
1071	Champagne Tower	Medium	18	0.6%
1072	Total Waviness of Numbers in Range I	Medium	18	0.9%
1073	Remove Duplicates from Sorted List II	Medium	16	0.5%
1074	Binary Tree Level Order Traversal II	Medium	16	0.7%
1075	Bitwise AND of Numbers Range	Medium	16	0.5%
1076	Contains Duplicate III	Hard	16	0.2%
1077	Count Complete Tree Nodes	Easy	16	0.7%
1078	Shortest Word Distance	Easy	16	0.7%
1079	Remove Invalid Parentheses	Hard	16	0.5%
1080	Best Time to Buy and Sell Stock with Cooldown	Medium	16	0.6%
1081	Shortest Distance from All Buildings	Hard	16	0.4%
1082	Count of Range Sum	Hard	16	0.4%
1083	Combination Sum IV	Medium	16	0.6%
1084	Arithmetic Slices	Medium	16	0.6%
1085	Can I Win	Medium	16	0.3%
1086	Optimal Account Balancing	Hard	16	0.5%
1087	Relative Ranks	Easy	16	0.7%
1088	Shortest Unsorted Continuous Subarray	Medium	16	0.4%
1089	Investments in 2016	Medium	16	0.5%
1090	Not Boring Movies	Easy	16	0.8%
1091	Best Time to Buy and Sell Stock with Transaction Fee	Medium	16	0.7%
1092	Maximum Length of Repeated Subarray	Medium	16	0.5%
1093	Find Smallest Letter Greater Than Target	Easy	16	0.6%
1094	K-th Symbol in Grammar	Medium	16	0.5%
1095	Rabbits in Forest	Medium	16	0.6%
1096	Hand of Straights	Medium	16	0.6%
1097	Minimum Cost to Hire K Workers	Hard	16	0.6%
1098	Monotonic Array	Easy	16	0.6%
1099	Sort Array By Parity	Easy	16	0.8%
1100	Range Sum of BST	Easy	16	0.9%
1101	Reveal Cards In Increasing Order	Medium	16	0.8%
1102	Regions Cut By Slashes	Medium	16	0.8%
1103	Divisor Game	Easy	16	0.7%
1104	Maximum Level Sum of a Binary Tree	Medium	16	0.7%
1105	As Far from Land as Possible	Medium	16	0.5%
1106	Partition Array for Maximum Sum	Medium	16	0.8%
1107	Filling Bookcase Shelves	Medium	16	0.7%
1108	Defanging an IP Address	Easy	16	0.9%
1109	Stone Game II	Medium	16	0.7%
1110	Invalid Transactions	Medium	16	0.3%
1111	Find Resultant Array After Removing Anagrams	Easy	16	0.7%
1112	Minimum Insertion Steps to Make a String Palindrome	Hard	16	0.7%
1113	Jump Game IV	Hard	16	0.5%
1114	Find the City With the Smallest Number of Neighbors at a Threshold Distance	Medium	16	0.7%
1115	Maximum Product of Splitted Binary Tree	Medium	16	0.6%
1116	Design a Stack With Increment Operation	Medium	16	0.8%
1117	Cherry Pickup II	Hard	16	0.7%
1118	Maximum Product of Two Elements in an Array	Easy	16	0.8%
1119	Minimum Number of Increments on Subarrays to Form a Target Array	Hard	16	0.8%
1120	Find Kth Bit in Nth Binary String	Medium	16	0.7%
1121	Minimum Number of Operations to Move All Balls to Each Box	Medium	16	0.9%
1122	Maximum Population Year	Easy	16	0.6%
1123	Final Value of Variable After Performing Operations	Easy	16	0.9%
1124	Step-By-Step Directions From a Binary Tree Node to Another	Medium	16	0.6%
1125	Root Equals Sum of Children	Easy	16	0.9%
1126	Number of Unique Subjects Taught by Each Teacher	Easy	16	0.9%
1127	Apply Operations to an Array	Easy	16	0.7%
1128	Minimize the Maximum Difference of Pairs	Medium	16	0.5%
1129	Sort the Jumbled Numbers	Medium	16	0.6%
1130	Primary Department for Each Employee	Easy	16	0.7%
1131	Minimum Cost to Convert String I	Medium	16	0.6%
1132	Count the Number of Complete Components	Medium	16	0.8%
1133	Water and Jug Problem	Medium	16	0.5%
1134	Minimum Operations to Make Binary Array Elements Equal to One I	Medium	16	0.8%
1135	Add to Array-Form of Integer	Easy	16	0.5%
1136	Valid Tic-Tac-Toe State	Medium	16	0.3%
1137	Sum of Prefix Scores of Strings	Hard	16	0.6%
1138	Count Number of Maximum Bitwise-OR Subsets	Medium	16	0.9%
1139	Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold	Medium	16	0.7%
1140	Sum of Unique Elements	Easy	16	0.8%
1141	Make Lexicographically Smallest Array by Swapping Elements	Medium	16	0.6%
1142	Maximum Subarray Min-Product	Medium	16	0.4%
1143	Maximum Tastiness of Candy Basket	Medium	16	0.7%
1144	Delete Columns to Make Sorted	Easy	16	0.8%
1145	Design Snake Game	Medium	16	0.4%
1146	The k-th Lexicographical String of All Happy Strings of Length n	Medium	16	0.9%
1147	Number of Sub-arrays With Odd Sum	Medium	16	0.6%
1148	Separate Squares II	Hard	16	0.6%
1149	Length of Longest Fibonacci Subsequence	Medium	16	0.6%
1150	Minimum Domino Rotations For Equal Row	Medium	16	0.6%
1151	Zero Array Transformation I	Medium	16	0.5%
1152	Maximum Difference Between Even and Odd Frequency I	Easy	16	0.6%
1153	Maximum Difference Between Increasing Elements	Easy	16	0.7%
1154	Maximum Balanced Shipments	Medium	16	0.6%
1155	Range Product Queries of Powers	Medium	16	0.6%
1156	Ways to Express an Integer as Sum of Powers	Medium	16	0.5%
1157	Find the Minimum Area to Cover All Ones I	Medium	16	0.8%
1158	Design Task Manager	Medium	16	0.5%
1159	Find Target Indices After Sorting Array	Easy	16	0.8%
1160	Maximum Total Damage With Spell Casting	Medium	16	0.5%
1161	Set Intersection Size At Least Two	Hard	16	0.6%
1162	Maximum Subarray Sum With Length Divisible by K	Medium	16	0.5%
1163	Minimum Penalty for a Shop	Medium	16	0.7%
1164	Minimum Pair Removal to Sort Array II	Hard	16	0.4%
1165	Minimum Cost Path with Edge Reversals	Medium	16	0.6%
1166	Minimum Initial Energy to Finish Tasks	Hard	16	0.8%
1167	Minimum Moves to Make Array Complementary	Medium	16	0.6%
1168	Minimum Cost of Buying Candies With Discount	Easy	16	0.7%
1169	Earliest Finish Time for Land and Water Rides I	Easy	16	0.7%
1170	Earliest Finish Time for Land and Water Rides II	Medium	16	0.6%
1171	Process String with Special Operations II	Hard	16	0.4%
1172	Number of ZigZag Arrays I	Hard	16	0.5%
1173	Maximum Gap	Medium	13	0.5%
1174	Fraction to Recurring Decimal	Medium	13	0.3%
1175	Create Maximum Number	Hard	13	0.4%
1176	Wiggle Sort II	Medium	13	0.4%
1177	Guess Number Higher or Lower	Easy	13	0.6%
1178	Strong Password Checker	Hard	13	0.2%
1179	Minimum Moves to Equal Array Elements	Medium	13	0.6%
1180	Kill Process	Medium	13	0.7%
1181	Friend Requests II: Who Has the Most Friends	Medium	13	0.6%
1182	Dota2 Senate	Medium	13	0.5%
1183	Reach a Number	Medium	13	0.5%
1184	Employee Free Time	Hard	13	0.7%
1185	Construct Quad Tree	Medium	13	0.8%
1186	Number of Matching Subsequences	Medium	13	0.5%
1187	Profitable Schemes	Hard	13	0.5%
1188	Fair Candy Swap	Easy	13	0.7%
1189	All Possible Full Binary Trees	Medium	13	0.8%
1190	Minimum Increment to Make Array Unique	Medium	13	0.6%
1191	Validate Stack Sequences	Medium	13	0.7%
1192	Verifying an Alien Dictionary	Easy	13	0.6%
1193	Cousins in Binary Tree	Easy	13	0.6%
1194	Project Employees I	Easy	13	0.7%
1195	Game Play Analysis I	Easy	13	0.8%
1196	Relative Sort Array	Easy	13	0.8%
1197	Last Person to Fit in the Bus	Medium	13	0.7%
1198	Maximum Side Length of a Square with Sum Less than or Equal to Threshold	Medium	13	0.7%
1199	Number of Steps to Reduce a Number to Zero	Easy	13	0.9%
1200	Maximum Score After Splitting a String	Easy	13	0.7%
1201	Water Bottles	Easy	13	0.7%
1202	Maximum Length of Subarray With Positive Product	Medium	13	0.4%
1203	Richest Customer Wealth	Easy	13	0.9%
1204	Partitioning Into Minimum Number Of Deci-Binary Numbers	Medium	13	0.9%
1205	Check if the Sentence Is Pangram	Easy	13	0.8%
1206	Reverse Prefix of Word	Easy	13	0.9%
1207	Find the Minimum and Maximum Number of Nodes Between Critical Points	Medium	13	0.7%
1208	Find Subsequence of Length K With the Largest Sum	Easy	13	0.6%
1209	Solving Questions With Brainpower	Medium	13	0.6%
1210	Array Prototype Last	Easy	13	0.7%
1211	Extra Characters in a String	Medium	13	0.6%
1212	Counter II	Easy	13	0.8%
1213	Count Complete Subarrays in an Array	Medium	13	0.8%
1214	Count Pairs Whose Sum is Less than Target	Easy	13	0.9%
1215	Divide Array Into Arrays With Max Difference	Medium	13	0.8%
1216	Find the Maximum Length of Valid Subsequence II	Medium	13	0.6%
1217	Minimum Deletions to Make String Balanced	Medium	13	0.7%
1218	Task Scheduler II	Medium	13	0.5%
1219	Split a String in Balanced Strings	Easy	13	0.9%
1220	Valid Word	Easy	13	0.5%
1221	Minimum Index Sum of Two Lists	Easy	13	0.6%
1222	Length of the Longest Subsequence That Sums to Target	Medium	13	0.4%
1223	N-ary Tree Postorder Traversal	Easy	13	0.8%
1224	Out of Boundary Paths	Medium	13	0.5%
1225	Longest Continuous Increasing Subsequence	Easy	13	0.5%
1226	Find the Longest Substring Containing Vowels in Even Counts	Medium	13	0.8%
1227	Rank Transform of an Array	Easy	13	0.7%
1228	Biggest Single Number	Easy	13	0.7%
1229	Divide Players Into Teams of Equal Skill	Medium	13	0.7%
1230	Rearrange String k Distance Apart	Hard	13	0.4%
1231	Minimum Subsequence in Non-Increasing Order	Easy	13	0.7%
1232	Check if Number is a Sum of Powers of Three	Medium	13	0.8%
1233	Adjacent Increasing Subarrays Detection I	Easy	13	0.5%
1234	Take K of Each Character From Left and Right	Medium	13	0.5%
1235	The Most Frequently Ordered Products for Each Customer	Medium	13	0.8%
1236	Find Score of an Array After Marking All Elements	Medium	13	0.6%
1237	Best Sightseeing Pair	Medium	13	0.6%
1238	Shifting Letters II	Medium	13	0.5%
1239	Find Users With Valid E-Mails	Easy	13	0.4%
1240	Minimize XOR	Medium	13	0.6%
1241	Neighboring Bitwise XOR	Medium	13	0.8%
1242	Tree Diameter	Medium	13	0.6%
1243	Map of Highest Peak	Medium	13	0.8%
1244	Number of Subarrays with Bounded Maximum	Medium	13	0.6%
1245	Maximum Good Subarray Sum	Medium	13	0.2%
1246	Find the Punishment Number of an Integer	Medium	13	0.8%
1247	Self Dividing Numbers	Easy	13	0.8%
1248	Maximum Sum of Two Non-Overlapping Subarrays	Medium	13	0.6%
1249	Count Total Number of Colored Cells	Medium	13	0.7%
1250	Find Duplicate File in System	Medium	13	0.7%
1251	Zero Array Transformation II	Medium	13	0.4%
1252	Minimum Time to Repair Cars	Medium	13	0.6%
1253	Count Vowel Substrings of a String	Easy	13	0.7%
1254	Number of Pairs Satisfying Inequality	Hard	13	0.5%
1255	Find Closest Node to Given Two Nodes	Medium	13	0.5%
1256	Max Difference You Can Get From Changing an Integer	Medium	13	0.5%
1257	Minimum Time to Complete Trips	Medium	13	0.4%
1258	Find the Original Typed String I	Easy	13	0.7%
1259	Find the Original Typed String II	Hard	13	0.5%
1260	Last Day Where You Can Still Cross	Hard	13	0.7%
1261	Minimum Pair Removal to Sort Array I	Easy	13	0.7%
1262	Count Hills and Valleys in an Array	Easy	13	0.7%
1263	Fruits Into Baskets III	Medium	13	0.4%
1264	Count Submatrices With All Ones	Medium	13	0.7%
1265	Find the Number of Ways to Place People I	Medium	13	0.6%
1266	Minimum Operations to Make the Integer Zero	Medium	13	0.6%
1267	Convert Integer to the Sum of Two No-Zero Integers	Easy	13	0.6%
1268	Number of People Aware of a Secret	Medium	13	0.6%
1269	Maximum Number of Words Found in Sentences	Easy	13	0.9%
1270	Taking Maximum Energy From the Mystic Dungeon	Medium	13	0.6%
1271	Smallest Missing Non-negative Integer After Operations	Medium	13	0.6%
1272	Best Time to Buy and Sell Stock V	Medium	13	0.6%
1273	Pyramid Transition Matrix	Medium	13	0.6%
1274	N-Repeated Element in Size 2N Array	Easy	13	0.8%
1275	Maximize Area of Square Hole in Grid	Medium	13	0.6%
1276	Construct the Minimum Bitwise Array II	Medium	13	0.7%
1277	Longest Balanced Subarray I	Medium	13	0.7%
1278	Longest Balanced Substring II	Medium	13	0.4%
1279	Check If a String Contains All Binary Codes of Size K	Medium	13	0.6%
1280	Buddy Strings	Easy	13	0.3%
1281	Find Minimum in Rotated Sorted Array II	Hard	10	0.5%
1282	Best Meeting Point	Hard	10	0.6%
1283	Palindrome Pairs	Hard	10	0.4%
1284	Integer Break	Medium	10	0.6%
1285	Find Leaves of Binary Tree	Medium	10	0.8%
1286	Super Pow	Medium	10	0.4%
1287	Queue Reconstruction by Height	Medium	10	0.7%
1288	Find Right Interval	Medium	10	0.6%
1289	Arithmetic Slices II - Subsequence	Hard	10	0.6%
1290	4Sum II	Medium	10	0.6%
1291	Find Bottom Left Tree Value	Medium	10	0.7%
1292	Brick Wall	Medium	10	0.6%
1293	Delete Operation for Two Strings	Medium	10	0.7%
1294	Swap Sex of Employees	Easy	10	0.8%
1295	Strange Printer	Hard	10	0.6%
1296	N-ary Tree Level Order Traversal	Medium	10	0.7%
1297	Reaching Points	Hard	10	0.3%
1298	Rotated Digits	Medium	10	0.6%
1299	Largest Triangle Area	Easy	10	0.7%
1300	Linked List Components	Medium	10	0.6%
1301	Most Profit Assigning Work	Medium	10	0.6%
1302	Robot Room Cleaner	Hard	10	0.8%
1303	Rectangle Overlap	Easy	10	0.5%
1304	Shortest Path Visiting All Nodes	Hard	10	0.7%
1305	Leaf-Similar Trees	Easy	10	0.7%
1306	Increasing Order Search Tree	Easy	10	0.8%
1307	Smallest Range II	Medium	10	0.4%
1308	Knight Dialer	Medium	10	0.6%
1309	Largest Perimeter Triangle	Easy	10	0.6%
1310	Longest Arithmetic Subsequence	Medium	10	0.5%
1311	Minimum Score Triangulation of Polygon	Medium	10	0.7%
1312	Last Substring in Lexicographical Order	Hard	10	0.4%
1313	Design A Leaderboard	Medium	10	0.7%
1314	Delete Nodes And Return Forest	Medium	10	0.7%
1315	Check If It Is a Straight Line	Easy	10	0.4%
1316	Group the People Given the Group Size They Belong To	Medium	10	0.9%
1317	Convert Binary Number in a Linked List to Integer	Easy	10	0.8%
1318	Minimum Number of Taps to Open to Water a Garden	Hard	10	0.5%
1319	Sort Integers by The Number of 1 Bits	Easy	10	0.8%
1320	Product of the Last K Numbers	Medium	10	0.6%
1321	Design Underground System	Medium	10	0.7%
1322	Least Number of Unique Integers after K Removals	Medium	10	0.6%
1323	Dot Product of Two Sparse Vectors	Medium	10	0.9%
1324	Minimum Number of Removals to Make Mountain Array	Hard	10	0.5%
1325	Minimum Deletions to Make Character Frequencies Unique	Medium	10	0.6%
1326	Count of Matches in Tournament	Easy	10	0.9%
1327	Construct the Lexicographically Largest Valid Sequence	Medium	10	0.7%
1328	Check if One String Swap Can Make Strings Equal	Easy	10	0.5%
1329	Find Center of Star Graph	Easy	10	0.9%
1330	Substrings of Size Three with Distinct Characters	Easy	10	0.8%
1331	Process Tasks Using Servers	Medium	10	0.4%
1332	Detect Squares	Medium	10	0.5%
1333	Maximum Employees to Be Invited to a Meeting	Hard	10	0.6%
1334	Merge Nodes in Between Zeros	Medium	10	0.9%
1335	Escape the Spreading Fire	Hard	10	0.4%
1336	Decode the Message	Easy	10	0.9%
1337	Largest Positive Integer That Exists With Its Negative	Easy	10	0.7%
1338	Count Subarrays With Fixed Bounds	Hard	10	0.7%
1339	Sliding Subarray Beauty	Medium	10	0.4%
1340	Cache With Time Limit	Medium	10	0.8%
1341	Count Subarrays Where Max Element Appears at Least K Times	Medium	10	0.6%
1342	Super Ugly Number	Medium	10	0.5%
1343	Check if the Rectangle Corner Is Reachable	Hard	10	0.3%
1344	Find Servers That Handled Most Number of Requests	Hard	10	0.5%
1345	Minimum Operations to Make All Array Elements Equal	Medium	10	0.4%
1346	Number of Good Ways to Split a String	Medium	10	0.7%
1347	Minimum Obstacle Removal to Reach Corner	Hard	10	0.7%
1348	All Ancestors of a Node in a Directed Acyclic Graph	Medium	10	0.6%
1349	Robot Collisions	Hard	10	0.6%
1350	Minimum String Length After Removing Substrings	Easy	10	0.8%
1351	Prime Palindrome	Medium	10	0.3%
1352	Numbers With Same Consecutive Differences	Medium	10	0.6%
1353	Sort the People	Easy	10	0.8%
1354	Finding the Users Active Minutes	Medium	10	0.8%
1355	Design Log Storage System	Medium	10	0.6%
1356	Lexicographically Smallest Beautiful String	Hard	10	0.4%
1357	Largest Combination With Bitwise AND Greater Than Zero	Medium	10	0.8%
1358	DI String Match	Easy	10	0.8%
1359	Maximum Number of Removable Characters	Medium	10	0.5%
1360	Zigzag Iterator	Medium	10	0.7%
1361	Rearrange Array to Maximize Prefix Score	Medium	10	0.4%
1362	Minimum Cost to Make at Least One Valid Path in a Grid	Hard	10	0.7%
1363	Paint House IV	Medium	10	0.5%
1364	Most Profitable Path in a Tree	Medium	10	0.7%
1365	Apply Operations to Make All Array Elements Equal to Zero	Medium	10	0.3%
1366	Max Chunks To Make Sorted II	Hard	10	0.5%
1367	Stock Price Fluctuation	Medium	10	0.5%
1368	Design Excel Sum Formula	Hard	10	0.4%
1369	Count Univalue Subtrees	Medium	10	0.6%
1370	Bitwise ORs of Subarrays	Medium	10	0.6%
1371	Closest Prime Numbers in Range	Medium	10	0.5%
1372	Count Palindromic Subsequences	Hard	10	0.4%
1373	Minimum Absolute Difference	Easy	10	0.8%
1374	Teemo Attacking	Easy	10	0.6%
1375	Market Analysis I	Medium	10	0.6%
1376	Expression Add Operators	Hard	10	0.4%
1377	Count Subarrays With Score Less Than K	Hard	10	0.6%
1378	Find the Middle Index in Array	Easy	10	0.7%
1379	Binary Watch	Easy	10	0.7%
1380	Range Sum Query 2D - Mutable	Medium	10	0.5%
1381	Number of Segments in a String	Easy	10	0.4%
1382	Minimum Cuts to Divide a Circle	Easy	10	0.6%
1383	Divisible and Non-divisible Sums Difference	Easy	10	0.9%
1384	Maximum Height by Stacking Cuboids	Hard	10	0.6%
1385	Find the Lexicographically Largest String From the Box I	Medium	10	0.4%
1386	Average of Levels in Binary Tree	Easy	10	0.7%
1387	Shortest Distance to a Character	Easy	10	0.7%
1388	Number of Islands II	Hard	10	0.4%
1389	Mirror Reflection	Medium	10	0.6%
1390	Cherry Pickup	Hard	10	0.4%
1391	Minimum Operations to Reduce an Integer to 0	Medium	10	0.6%
1392	Delete Characters to Make Fancy String	Easy	10	0.7%
1393	Maximum Unique Subarray Sum After Deletion	Easy	10	0.4%
1394	Jump Game III	Medium	10	0.7%
1395	A Number After a Double Reversal	Easy	10	0.8%
1396	Rearranging Fruits	Hard	10	0.6%
1397	Rectangle Area	Medium	10	0.5%
1398	Minimum Operations to Convert All Elements to Zero	Medium	10	0.5%
1399	Sort Matrix by Diagonals	Medium	10	0.8%
1400	Minimum Operations to Equalize Binary String	Hard	10	0.5%
1401	Minimum Number of People to Teach	Medium	10	0.7%
1402	Find the Minimum Amount of Time to Brew Potions	Medium	10	0.6%
1403	Maximum Number of Distinct Elements After Operations	Medium	10	0.5%
1404	Maximum Frequency of an Element After Performing Operations I	Medium	10	0.4%
1405	Make Array Elements Equal to Zero	Easy	10	0.7%
1406	Find X-Sum of All K-Long Subarrays I	Easy	10	0.8%
1407	Maximize the Minimum Powered City	Hard	10	0.6%
1408	Paths in Matrix Whose Sum Is Divisible by K	Hard	10	0.6%
1409	Maximum Running Time of N Computers	Hard	10	0.6%
1410	Count Partitions With Max-Min Difference at Most K	Medium	10	0.6%
1411	Best Time to Buy and Sell Stock using Strategy	Medium	10	0.6%
1412	Construct Product Matrix	Medium	10	0.5%
1413	Delete Columns to Make Sorted II	Medium	10	0.5%
1414	Paint House	Medium	10	0.6%
1415	Partition Array Into Three Parts With Equal Sum	Easy	10	0.4%
1416	Ones and Zeroes	Medium	10	0.5%
1417	Number of Ways to Paint N × 3 Grid	Hard	10	0.8%
1418	Construct the Minimum Bitwise Array I	Easy	10	0.9%
1419	Minimum Cost Path with Teleportations	Hard	10	0.5%
1420	Largest Magic Square	Medium	10	0.8%
1421	Smallest String Starting From Leaf	Medium	10	0.6%
1422	Binary Gap	Easy	10	0.7%
1423	Check if Binary String Has at Most One Segment of Ones	Easy	10	0.5%
1424	Find Unique Binary String	Medium	10	0.8%
1425	Get Biggest Three Rhombus Sums in a Grid	Medium	10	0.7%
1426	Maximum Non Negative Product in a Matrix	Medium	10	0.5%
1427	Daily Leads and Partners	Easy	10	0.9%
1428	Web Crawler	Medium	10	0.7%
1429	Largest Palindromic Number	Medium	10	0.4%
1430	Minimum Absolute Distance Between Mirror Pairs	Medium	10	0.6%
1431	Two Furthest Houses With Different Colors	Easy	10	0.7%
1432	Sum of Distances	Medium	10	0.5%
1433	Maximum Score From Grid Operations	Hard	10	0.6%
1434	First Completely Painted Row or Column	Medium	10	0.6%
1435	Maximum Number of Jumps to Reach the Last Index	Medium	10	0.5%
1436	Total Waviness of Numbers in Range II	Hard	10	0.6%
1437	Maximum Total Subarray Value I	Medium	10	0.7%
1438	Maximum Number of Balloons	Easy	10	0.6%
1439	Graph Valid Tree	Medium	7	0.5%
1440	Closest Binary Search Tree Value II	Hard	7	0.6%
1441	Maximum Product of Word Lengths	Medium	7	0.6%
1442	Maximum Size Subarray Sum Equals k	Medium	7	0.5%
1443	Patching Array	Hard	7	0.5%
1444	Plus One Linked List	Medium	7	0.6%
1445	Shuffle an Array	Medium	7	0.6%
1446	Mini Parser	Medium	7	0.4%
1447	Longest Absolute File Path	Medium	7	0.5%
1448	Random Pick Index	Medium	7	0.7%
1449	Convert a Number to Hexadecimal	Easy	7	0.5%
1450	Maximum XOR of Two Numbers in an Array	Medium	7	0.5%
1451	Circular Array Loop	Medium	7	0.4%
1452	Minimum Moves to Equal Array Elements II	Medium	7	0.6%
1453	Validate IP Address	Medium	7	0.3%
1454	Keyboard Row	Easy	7	0.7%
1455	Shopping Offers	Medium	7	0.5%
1456	Number of Longest Increasing Subsequence	Medium	7	0.5%
1457	Repeated String Match	Medium	7	0.4%
1458	Range Module	Hard	7	0.5%
1459	My Calendar II	Medium	7	0.6%
1460	Design HashSet	Easy	7	0.7%
1461	Binary Tree Pruning	Medium	7	0.7%
1462	Count Unique Characters of All Substrings of a Given String	Hard	7	0.5%
1463	Flipping an Image	Easy	7	0.8%
1464	Super Egg Drop	Hard	7	0.3%
1465	Beautiful Array	Medium	7	0.7%
1466	Two City Scheduling	Medium	7	0.7%
1467	Stream of Characters	Hard	7	0.5%
1468	Longest String Chain	Medium	7	0.6%
1469	Height Checker	Easy	7	0.8%
1470	Meeting Scheduler	Medium	7	0.6%
1471	Duplicate Zeros	Easy	7	0.5%
1472	Element Appearing More Than 25% In Sorted Array	Easy	7	0.6%
1473	Sort the Matrix Diagonally	Medium	7	0.8%
1474	Remove Zero Sum Consecutive Nodes from Linked List	Medium	7	0.5%
1475	Number of Days Between Two Dates	Easy	7	0.5%
1476	Three Consecutive Odds	Easy	7	0.7%
1477	Kth Ancestor of a Tree Node	Hard	7	0.4%
1478	Reverse Substrings Between Each Pair of Parentheses	Medium	7	0.7%
1479	Path with Maximum Probability	Medium	7	0.7%
1480	Path with Maximum Gold	Medium	7	0.7%
1481	Report Contiguous Dates	Hard	7	0.6%
1482	XOR Queries of a Subarray	Medium	7	0.8%
1483	Maximum 69 Number	Easy	7	0.8%
1484	Minimum Number of Steps to Make Two Strings Anagram	Medium	7	0.8%
1485	Time Needed to Inform All Employees	Medium	7	0.6%
1486	Destination City	Easy	7	0.8%
1487	Count Odd Numbers in an Interval Range	Easy	7	0.5%
1488	Count Good Triplets	Easy	7	0.9%
1489	Make The String Great	Easy	7	0.7%
1490	Widest Vertical Area Between Two Points Containing No Points	Easy	7	0.9%
1491	Merge In Between Linked Lists	Medium	7	0.8%
1492	Get Maximum in Generated Array	Easy	7	0.5%
1493	Determine if Two Strings Are Close	Medium	7	0.5%
1494	Check If Two String Arrays are Equivalent	Easy	7	0.9%
1495	Calculate Money in Leetcode Bank	Easy	7	0.8%
1496	Maximum Score From Removing Substrings	Medium	7	0.7%
1497	Remove One Element to Make the Array Strictly Increasing	Easy	7	0.3%
1498	Convert 1D Array Into 2D Array	Easy	7	0.7%
1499	Minimum Number of Moves to Seat Everyone	Easy	7	0.9%
1500	Time Needed to Buy Tickets	Easy	7	0.7%
1501	Minimum Bit Flips to Convert Number	Easy	7	0.9%
1502	Find Closest Number to Zero	Easy	7	0.5%
1503	Longest Path With Different Adjacent Characters	Hard	7	0.5%
1504	Longest Cycle in a Graph	Hard	7	0.5%
1505	Minimize Maximum of Array	Medium	7	0.5%
1506	Convert the Temperature	Easy	7	0.9%
1507	Count the Number of Good Subarrays	Medium	7	0.7%
1508	Apply Transform Over Each Element in Array	Easy	7	0.9%
1509	Number of Employees Who Met the Target	Easy	7	0.9%
1510	Display the First Three Rows	Easy	7	0.9%
1511	Find Words Containing Character	Easy	7	0.9%
1512	Minimum Number of Operations to Make Array XOR Equal to K	Medium	7	0.9%
1513	Minimum Array End	Medium	7	0.6%
1514	Group Sold Products By The Date	Easy	7	0.8%
1515	Longest Turbulent Subarray	Medium	7	0.5%
1516	Minimum Number of Days to Disconnect Island	Hard	7	0.6%
1517	Degree of an Array	Easy	7	0.6%
1518	HTML Entity Parser	Medium	7	0.5%
1519	Dinner Plate Stacks	Hard	7	0.3%
1520	Maximize Score of Numbers in Ranges	Medium	7	0.4%
1521	Check if Two Chessboard Squares Have the Same Color	Easy	7	0.7%
1522	Longest Strictly Increasing or Strictly Decreasing Subarray	Easy	7	0.6%
1523	Count the Number of Inversions	Hard	7	0.3%
1524	Uncommon Words from Two Sentences	Easy	7	0.8%
1525	Sort By	Easy	7	0.8%
1526	Largest Sum of Averages	Medium	7	0.6%
1527	Minimize Max Distance to Gas Station	Hard	7	0.5%
1528	The Maze	Medium	7	0.6%
1529	Maximal Score After Applying K Operations	Medium	7	0.6%
1530	Split a String Into the Max Number of Unique Substrings	Medium	7	0.7%
1531	Find Occurrences of an Element in an Array	Medium	7	0.7%
1532	Grid Game	Medium	7	0.6%
1533	Flip Columns For Maximum Number of Equal Rows	Medium	7	0.8%
1534	Reshape Data: Pivot	Easy	7	0.8%
1535	Minimum Operations to Make a Subsequence	Hard	7	0.5%
1536	Minimum Time to Visit a Cell In a Grid	Hard	7	0.6%
1537	Find Building Where Alice and Bob Can Meet	Hard	7	0.5%
1538	Count Ways To Build Good Strings	Medium	7	0.6%
1539	Employee Importance	Medium	7	0.7%
1540	Construct K Palindrome Strings	Medium	7	0.7%
1541	Minimum Time to Collect All Apples in a Tree	Medium	7	0.6%
1542	Maximum Number of Fish in a Grid	Medium	7	0.7%
1543	Maximum Ascending Subarray Sum	Easy	7	0.7%
1544	Tuple with Same Product	Medium	7	0.7%
1545	Find the Number of Distinct Colors Among the Balls	Medium	7	0.5%
1546	Minimum Operations to Exceed Threshold Value II	Medium	7	0.5%
1547	Escape a Large Maze	Hard	7	0.4%
1548	Divide Nodes Into the Maximum Number of Groups	Hard	7	0.7%
1549	Minimum Operations to Make the Array Increasing	Easy	7	0.8%
1550	Rank Teams by Votes	Medium	7	0.6%
1551	Sentence Similarity II	Medium	7	0.5%
1552	Minimum Recolors to Get K Consecutive Black Blocks	Easy	7	0.7%
1553	Sliding Puzzle	Hard	7	0.7%
1554	N-ary Tree Preorder Traversal	Easy	7	0.8%
1555	Divide Array Into Equal Pairs	Easy	7	0.8%
1556	Parallel Courses	Medium	7	0.6%
1557	Data Stream as Disjoint Intervals	Hard	7	0.6%
1558	Find the Kth Smallest Sum of a Matrix With Sorted Rows	Hard	7	0.6%
1559	Check if Grid can be Cut into Sections	Medium	7	0.7%
1560	Count of Substrings Containing Every Vowel and K Consonants II	Medium	7	0.4%
1561	Binary Tree Tilt	Easy	7	0.7%
1562	Number of Adjacent Elements With the Same Color	Medium	7	0.6%
1563	Alternating Groups I	Easy	7	0.7%
1564	Finding Pairs With a Certain Sum	Medium	7	0.6%
1565	Count the Number of Ideal Arrays	Hard	7	0.6%
1566	Push Dominoes	Medium	7	0.6%
1567	Find Minimum Time to Reach Last Room II	Medium	7	0.7%
1568	Count Collisions of Monkeys on a Polygon	Medium	7	0.3%
1569	Max Pair Sum in an Array	Easy	7	0.6%
1570	Maximum Difference Between Even and Odd Frequency II	Hard	7	0.5%
1571	Maximum Difference Between Adjacent Elements in a Circular Array	Easy	7	0.8%
1572	Surface Area of 3D Shapes	Easy	7	0.7%
1573	Check if All Characters Have Equal Number of Occurrences	Easy	7	0.8%
1574	Check if All the Integers in a Range Are Covered	Easy	7	0.5%
1575	Count Nodes Equal to Average of Subtree	Medium	7	0.9%
1576	Longest Binary Subsequence Less Than or Equal to K	Medium	7	0.5%
1577	Minimum Distance Between BST Nodes	Easy	7	0.6%
1578	Longest Nice Substring	Easy	7	0.6%
1579	Find the K-th Character in String Game II	Hard	7	0.5%
1580	Reschedule Meetings for Maximum Free Time II	Medium	7	0.6%
1581	The Earliest and Latest Rounds Where Players Compete	Hard	7	0.7%
1582	Number of Pairs of Interchangeable Rectangles	Medium	7	0.5%
1583	Minimize Malware Spread	Hard	7	0.4%
1584	Construct the Rectangle	Easy	7	0.6%
1585	Check Balanced String	Easy	7	0.8%
1586	Longest Non-decreasing Subarray From Two Arrays	Medium	7	0.3%
1587	Maximum Fruits Harvested After at Most K Steps	Hard	7	0.6%
1588	Patients With a Condition	Easy	7	0.4%
1589	Analyze Organization Hierarchy	Hard	7	0.6%
1590	Matchsticks to Square	Medium	7	0.4%
1591	Distinct Subsequences II	Hard	7	0.4%
1592	Count Salary Categories	Medium	7	0.6%
1593	Minimum Time Visiting All Points	Easy	7	0.8%
1594	Remove Boxes	Hard	7	0.5%
1595	Maximum Number of Occurrences of a Substring	Medium	7	0.5%
1596	Find Closest Person	Easy	7	0.9%
1597	Find Most Frequent Vowel and Consonant	Easy	7	0.9%
1598	Maximum Number of Words You Can Type	Easy	7	0.8%
1599	Unique Email Addresses	Easy	7	0.7%
1600	Ugly Number III	Medium	7	0.3%
1601	Friends Of Appropriate Ages	Medium	7	0.5%
1602	Longest Subsequence With Limited Sum	Easy	7	0.7%
1603	Maximum Frequency of an Element After Performing Operations II	Hard	7	0.5%
1604	Smallest Number With All Set Bits	Easy	7	0.8%
1605	Number of Good Paths	Hard	7	0.6%
1606	The Two Sneaky Numbers of Digitville	Easy	7	0.9%
1607	Maximum and Minimum Sums of at Most Size K Subsequences	Medium	7	0.2%
1608	Minimum Time to Make Rope Colorful	Medium	7	0.7%
1609	Power Grid Maintenance	Medium	7	0.6%
1610	Count Operations to Obtain Zero	Easy	7	0.8%
1611	Minimum Number of Operations to Make All Array Elements Equal to 1	Medium	7	0.5%
1612	Maximum Number of Operations to Move Ones to the End	Medium	7	0.7%
1613	Find Minimum Operations to Make All Elements Divisible by Three	Easy	7	0.9%
1614	Smallest Integer Divisible by K	Medium	7	0.5%
1615	Car Fleet II	Hard	7	0.6%
1616	Sign of the Product of an Array	Easy	7	0.6%
1617	Minimum Operations to Make Array Sum Divisible by K	Easy	7	0.9%
1618	Count the Digits That Divide a Number	Easy	7	0.9%
1619	Count Largest Group	Easy	7	0.7%
1620	Find Followers Count	Easy	7	0.7%
1621	Perfect Rectangle	Hard	7	0.4%
1622	Split Array With Same Average	Hard	7	0.3%
1623	Minimize Maximum Pair Sum in Array	Medium	7	0.8%
1624	Count Symmetric Integers	Easy	7	0.8%
1625	Divide an Array Into Subarrays With Minimum Cost II	Hard	7	0.5%
1626	Minimum Edge Reversals So Every Node Is Reachable	Hard	7	0.6%
1627	Minimum Absolute Difference in BST	Easy	7	0.6%
1628	Longest Balanced Subarray II	Hard	7	0.3%
1629	Happy Students	Medium	7	0.5%
1630	Binary Number with Alternating Bits	Easy	7	0.7%
1631	Customer Placing the Largest Number of Orders	Easy	7	0.6%
1632	Satisfiability of Equality Equations	Medium	7	0.5%
1633	Minimum Swaps to Arrange a Binary Grid	Medium	7	0.7%
1634	Minimum Number of Flips to Make the Binary String Alternating	Medium	7	0.5%
1635	Merge BSTs to Create Single BST	Hard	7	0.4%
1636	Find All Possible Stable Binary Arrays II	Hard	7	0.6%
1637	Complement of Base 10 Integer	Easy	7	0.6%
1638	Maximize Spanning Tree Stability with Upgrades	Hard	7	0.7%
1639	Minimum Number of Seconds to Make Mountain Height Zero	Medium	7	0.6%
1640	Fancy Sequence	Hard	7	0.4%
1641	Largest Submatrix With Rearrangements	Medium	7	0.8%
1642	Maximum Amount of Money Robot Can Earn	Medium	7	0.5%
1643	Maximum Walls Destroyed by Robots	Hard	7	0.5%
1644	XOR After Range Multiplication Queries I	Medium	7	0.7%
1645	XOR After Range Multiplication Queries II	Hard	7	0.5%
1646	Find Mode in Binary Search Tree	Easy	7	0.6%
1647	Shortest Distance to Target String in a Circular Array	Easy	7	0.7%
1648	Closest Equal Element Queries	Medium	7	0.5%
1649	Subtract the Product and Sum of Digits of an Integer	Easy	7	0.9%
1650	Minimum Operations to Make a Uni-Value Grid	Medium	7	0.7%
1651	Score After Flipping Matrix	Medium	7	0.8%
1652	Jump Game IX	Medium	7	0.5%
1653	Minimum Jumps to Reach End via Prime Teleportation	Medium	7	0.4%
1654	Reshape the Matrix	Easy	7	0.7%
1655	Parallel Courses II	Hard	7	0.3%
1656	Jump Game V	Hard	7	0.8%
1657	Longest Common Suffix Queries	Hard	7	0.5%
1658	Minimum Number Game	Easy	7	0.9%
1659	Left and Right Sum Differences	Easy	7	0.9%
1660	Bag of Tokens	Medium	7	0.6%
1661	Number of Ways to Assign Edge Weights I	Medium	7	0.6%
1662	Longest Substring with At Most Two Distinct Characters	Medium	5	0.6%
1663	Hamming Distance	Easy	5	0.8%
1664	Magical String	Medium	5	0.6%
1665	Beautiful Arrangement	Medium	5	0.6%
1666	Erect the Fence	Hard	5	0.5%
1667	Sales Person	Easy	5	0.7%
1668	Print Binary Tree	Medium	5	0.7%
1669	Minimum ASCII Delete Sum for Two Strings	Medium	5	0.7%
1670	Longest Word in Dictionary	Medium	5	0.5%
1671	Count Different Palindromic Subsequences	Hard	5	0.5%
1672	Convert Binary Search Tree to Sorted Doubly Linked List	Medium	5	0.7%
1673	Letter Case Permutation	Medium	5	0.8%
1674	Sum of Distances in Tree	Hard	5	0.7%
1675	Similar String Groups	Hard	5	0.6%
1676	Longest Mountain in Array	Medium	5	0.4%
1677	Advantage Shuffle	Medium	5	0.5%
1678	Decoded String at Index	Medium	5	0.4%
1679	Spiral Matrix III	Medium	5	0.8%
1680	Construct Binary Tree from Preorder and Postorder Traversal	Medium	5	0.8%
1681	Flip Equivalent Binary Trees	Medium	5	0.7%
1682	Check Completeness of a Binary Tree	Medium	5	0.6%
1683	Minimum Number of K Consecutive Bit Flips	Hard	5	0.6%
1684	Number of Enclaves	Medium	5	0.7%
1685	Lowest Common Ancestor of Deepest Leaves	Medium	5	0.8%
1686	Minimum Moves to Reach Target Score	Medium	5	0.5%
1687	Number of Closed Islands	Medium	5	0.7%
1688	Longest ZigZag Path in a Binary Tree	Medium	5	0.7%
1689	Linked List in Binary Tree	Medium	5	0.5%
1690	Find a Corresponding Node of a Binary Tree in a Clone of That Tree	Easy	5	0.9%
1691	Create Target Array in the Given Order	Easy	5	0.9%
1692	Diagonal Traverse II	Medium	5	0.6%
1693	String Compression II	Hard	5	0.5%
1694	Minimum Suffix Flips	Medium	5	0.7%
1695	Maximum Number of Coins You Can Get	Medium	5	0.8%
1696	Sum of All Odd Length Subarrays	Easy	5	0.8%
1697	Special Array With X Elements Greater Than or Equal X	Easy	5	0.7%
1698	Maximum Repeating Substring	Easy	5	0.4%
1699	Average Waiting Time	Medium	5	0.7%
1700	Count Items Matching a Rule	Easy	5	0.9%
1701	Single-Threaded CPU	Medium	5	0.5%
1702	Sorting the Sentence	Easy	5	0.8%
1703	Minimum Non-Zero Product of the Array Elements	Medium	5	0.4%
1704	Minimum Number of Work Sessions to Finish the Tasks	Medium	5	0.4%
1705	Find All People With Secret	Hard	5	0.5%
1706	Remove Digit From Number to Maximize Result	Easy	5	0.5%
1707	Equal Row and Column Pairs	Medium	5	0.7%
1708	Minimum Number of Operations to Make Arrays Similar	Hard	5	0.6%
1709	Split Message Based on Limit	Hard	5	0.4%
1710	Difference Between Element Sum and Digit Sum of an Array	Easy	5	0.9%
1711	Maximum Subsequence Score	Medium	5	0.5%
1712	Take Gifts From the Richest Pile	Easy	5	0.8%
1713	The Number of Beautiful Subsets	Medium	5	0.5%
1714	Sleep	Easy	5	0.9%
1715	Function Composition	Easy	5	0.9%
1716	Buy Two Chocolates	Easy	5	0.7%
1717	Event Emitter	Medium	5	0.8%
1718	Painting the Walls	Hard	5	0.5%
1719	Maximum Odd Binary Number	Easy	5	0.8%
1720	Length of Longest Subarray With at Most K Frequency	Medium	5	0.6%
1721	Minimum Cost Walk in Weighted Graph	Hard	5	0.7%
1722	Minimum Cost to Equalize Array	Hard	5	0.2%
1723	Special Array II	Medium	5	0.5%
1724	Special Array I	Easy	5	0.8%
1725	Find the Number of Good Pairs II	Medium	5	0.3%
1726	Valid Palindrome III	Hard	5	0.5%
1727	Make Two Arrays Equal by Reversing Subarrays	Easy	5	0.8%
1728	Range Sum of Sorted Subarray Sums	Medium	5	0.6%
1729	Minimum Interval to Include Each Query	Hard	5	0.5%
1730	Reverse Nodes in Even Length Groups	Medium	5	0.6%
1731	Maximum Distance in Arrays	Medium	5	0.5%
1732	Maximum Number of Points with Cost	Medium	5	0.4%
1733	Subarray With Elements Greater Than Varying Threshold	Hard	5	0.5%
1734	Find Elements in a Contaminated Binary Tree	Medium	5	0.8%
1735	Lexicographically Smallest String After Substring Operation	Medium	5	0.4%
1736	Count Nodes With the Highest Score	Medium	5	0.5%
1737	Two Sum III - Data structure design	Easy	5	0.4%
1738	Encrypt and Decrypt Strings	Hard	5	0.4%
1739	Design Circular Deque	Medium	5	0.6%
1740	Sentence Similarity III	Medium	5	0.5%
1741	Number of Changing Keys	Easy	5	0.8%
1742	Minimum Insertions to Balance a Parentheses String	Medium	5	0.5%
1743	Word Pattern II	Medium	5	0.5%
1744	Divide Intervals Into Minimum Number of Groups	Medium	5	0.6%
1745	Random Pick with Blacklist	Hard	5	0.4%
1746	Complete Binary Tree Inserter	Medium	5	0.7%
1747	Minimum Division Operations to Make Array Non Decreasing	Medium	5	0.3%
1748	The Most Recent Orders for Each Product	Medium	5	0.7%
1749	Find if Array Can Be Sorted	Medium	5	0.7%
1750	Simple Bank System	Medium	5	0.7%
1751	Prime Subtraction Operation	Medium	5	0.6%
1752	Final Array State After K Multiplication Operations I	Easy	5	0.9%
1753	Length of the Longest Alphabetical Continuous Substring	Medium	5	0.6%
1754	The Maze II	Medium	5	0.6%
1755	Valid Arrangement of Pairs	Hard	5	0.7%
1756	Check If a Word Occurs As a Prefix of Any Word in a Sentence	Easy	5	0.7%
1757	Find Longest Special Substring That Occurs Thrice I	Medium	5	0.6%
1758	Minimum Operations to Make Array Equal to Target	Hard	5	0.4%
1759	Maximum Number of K-Divisible Components	Hard	5	0.7%
1760	Maximum Strength of K Disjoint Subarrays	Hard	5	0.3%
1761	Count Collisions on a Road	Medium	5	0.6%
1762	Button with Longest Push Time	Easy	5	0.4%
1763	All People Report to the Given Manager	Medium	5	0.8%
1764	Largest Element in an Array after Merge Operations	Medium	5	0.5%
1765	Minimum Length of String After Operations	Medium	5	0.8%
1766	Maximum XOR After Operations	Medium	5	0.8%
1767	Maximum Possible Number by Binary Concatenation	Medium	5	0.7%
1768	Maximize the Minimum Game Score	Hard	5	0.3%
1769	Maximum Sum With Exactly K Elements	Easy	5	0.8%
1770	Minimum Score of a Path Between Two Cities	Medium	5	0.6%
1771	Range Addition	Medium	5	0.7%
1772	Check if Matrix Is X-Matrix	Easy	5	0.7%
1773	Select K Disjoint Special Substrings	Medium	5	0.2%
1774	Find Common Elements Between Two Arrays	Easy	5	0.8%
1775	Count Days Without Meetings	Medium	5	0.5%
1776	Minimum Index of a Valid Split	Medium	5	0.8%
1777	Maximum Score of Non-overlapping Intervals	Hard	5	0.3%
1778	Remove Stones to Minimize the Total	Medium	5	0.7%
1779	Maximum Value of an Ordered Triplet II	Medium	5	0.6%
1780	Customer Purchasing Behavior Analysis	Medium	5	0.4%
1781	Number of Subarrays That Match a Pattern I	Medium	5	0.7%
1782	Describe the Painting	Medium	5	0.5%
1783	String Without AAA or BBB	Medium	5	0.5%
1784	Zuma Game	Hard	5	0.3%
1785	Merge Two 2D Arrays by Summing Values	Easy	5	0.8%
1786	Pizza Toppings Cost Analysis	Medium	5	0.7%
1787	Maximum Profit From Trading Stocks	Medium	5	0.5%
1788	Minimum Number of Swaps to Make the Binary String Alternating	Medium	5	0.4%
1789	Minimum Amount of Damage Dealt to Bob	Hard	5	0.4%
1790	Painting a Grid With Three Different Colors	Hard	5	0.8%
1791	Manhattan Distances of All Arrangements of Pieces	Hard	5	0.4%
1792	Minimum Cost to Make Arrays Identical	Medium	5	0.4%
1793	Integer Replacement	Medium	5	0.4%
1794	Pizza With 3n Slices	Hard	5	0.5%
1795	Tiling a Rectangle with the Fewest Squares	Hard	5	0.6%
1796	Count Beautiful Splits in an Array	Medium	5	0.2%
1797	Binary Tree Longest Consecutive Sequence	Medium	5	0.5%
1798	Maximum Value of an Ordered Triplet I	Easy	5	0.6%
1799	Zero Array Transformation III	Medium	5	0.5%
1800	Year on Year Growth Rate	Hard	5	0.5%
1801	Count the Number of Arrays with K Matching Adjacent Elements	Hard	5	0.6%
1802	Number of Common Factors	Easy	5	0.8%
1803	Find Smallest Common Element in All Rows	Medium	5	0.8%
1804	Delete Greatest Value in Each Row	Easy	5	0.8%
1805	Longest Subsequence Repeated k Times	Hard	5	0.7%
1806	Longest Common Prefix Between Adjacent Strings After Removals	Medium	5	0.3%
1807	Minimum Cost to Move Chips to The Same Position	Easy	5	0.7%
1808	Kth Smallest Instructions	Hard	5	0.4%
1809	Maximum Beauty of an Array After Applying Operation	Medium	5	0.6%
1810	Find Special Substring of Length K	Easy	5	0.4%
1811	Game Play Analysis II	Easy	5	0.5%
1812	Check Knight Tour Configuration	Medium	5	0.6%
1813	Maximum Number of Visible Points	Hard	5	0.4%
1814	Minimize the Maximum Adjacent Element Difference	Hard	5	0.2%
1815	Maximum Depth of N-ary Tree	Easy	5	0.7%
1816	Inorder Successor in BST	Medium	5	0.5%
1817	Maximum Size of a Set After Removals	Medium	5	0.5%
1818	Maximum Difference by Remapping a Digit	Easy	5	0.8%
1819	Increasing Decreasing String	Easy	5	0.8%
1820	Find Valid Pair of Adjacent Digits in String	Easy	5	0.6%
1821	Find Lucky Integer in an Array	Easy	5	0.8%
1822	Collecting Chocolates	Medium	5	0.4%
1823	Falling Squares	Hard	5	0.5%
1824	Number of Ways to Form a Target String Given a Dictionary	Hard	5	0.6%
1825	Remove Duplicates From an Unsorted Linked List	Medium	5	0.8%
1826	Alice and Bob Playing Flower Game	Medium	5	0.6%
1827	Balanced K-Factor Decomposition	Medium	5	0.4%
1828	Find the Largest Palindrome Divisible by K	Hard	5	0.2%
1829	Reshape Data: Melt	Easy	5	0.9%
1830	Sort the Students by Their Kth Score	Medium	5	0.9%
1831	Maximize Greatness of an Array	Medium	5	0.6%
1832	Alternating Digit Sum	Easy	5	0.7%
1833	Water Bottles II	Medium	5	0.8%
1834	Count Substrings That Can Be Rearranged to Contain a String I	Medium	5	0.4%
1835	Sort Items by Groups Respecting Dependencies	Hard	5	0.7%
1836	Minimum Number of Chairs in a Waiting Room	Easy	5	0.8%
1837	Minimum Operations to Write the Letter Y on a Grid	Medium	5	0.6%
1838	Count Number of Ways to Place Houses	Medium	5	0.4%
1839	Binary Tree Coloring Game	Medium	5	0.5%
1840	Two-Letter Card Game	Medium	5	0.1%
1841	Sequence Reconstruction	Medium	5	0.3%
1842	Maximum Value after Insertion	Medium	5	0.4%
1843	Delete Duplicate Folders in System	Hard	5	0.8%
1844	Sum of Perfect Square Ancestors	Hard	5	0.4%
1845	Consecutive Characters	Easy	5	0.6%
1846	Non-decreasing Subsequences	Medium	5	0.6%
1847	Stable Subarrays With Equal Boundary and Interior Sum	Medium	5	0.3%
1848	Count Unguarded Cells in the Grid	Medium	5	0.7%
1849	Smallest Palindromic Rearrangement I	Medium	5	0.6%
1850	Wiggle Sort	Medium	5	0.7%
1851	Minimum Unique Word Abbreviation	Hard	5	0.4%
1852	Minimum Time for K Connected Components	Medium	5	0.5%
1853	Truncate Sentence	Easy	5	0.9%
1854	Minimum Operations to Make Array Equal	Medium	5	0.8%
1855	Count Partitions with Even Sum Difference	Easy	5	0.9%
1856	Clumsy Factorial	Medium	5	0.6%
1857	Shortest Distance After Road Addition Queries I	Medium	5	0.6%
1858	Count the Number of Computer Unlocking Permutations	Medium	5	0.6%
1859	Find the Array Concatenation Value	Easy	5	0.7%
1860	Binary Prefix Divisible By 5	Easy	5	0.5%
1861	Operations on Tree	Medium	5	0.5%
1862	Maximize Cyclic Partition Score	Hard	5	0.1%
1863	Implement Router	Medium	5	0.4%
1864	Range Addition II	Easy	5	0.6%
1865	Delete Columns to Make Sorted III	Hard	5	0.7%
1866	Four Divisors	Medium	5	0.6%
1867	Lucky Numbers in a Matrix	Easy	5	0.8%
1868	Sparse Matrix Multiplication	Medium	5	0.7%
1869	Smallest Subtree with all the Deepest Nodes	Medium	5	0.8%
1870	Restore the Array From Adjacent Pairs	Medium	5	0.8%
1871	Find Original Array From Doubled Array	Medium	5	0.4%
1872	Number of Substrings With Only 1s	Medium	5	0.6%
1873	Smallest Good Base	Hard	5	0.5%
1874	Promise Time Limit	Medium	5	0.8%
1875	Maximum Sum of Three Numbers Divisible by Three	Medium	5	0.5%
1876	Non-decreasing Array	Medium	5	0.3%
1877	Implement Trie II (Prefix Tree)	Medium	5	0.6%
1878	Minimize the Maximum of Two Arrays	Medium	5	0.3%
1879	Minimum Value to Get Positive Step by Step Sum	Easy	5	0.6%
1880	Frog Jump II	Medium	5	0.6%
1881	Design Spreadsheet	Medium	5	0.7%
1882	Array Nesting	Medium	5	0.6%
1883	Non-negative Integers without Consecutive Ones	Hard	5	0.4%
1884	Max Sum of Rectangle No Larger Than K	Hard	5	0.5%
1885	3Sum With Multiplicity	Medium	5	0.5%
1886	Find Greatest Common Divisor of Array	Easy	5	0.8%
1887	Vowels Game in a String	Medium	5	0.8%
1888	Reachable Nodes In Subdivided Graph	Hard	5	0.5%
1889	Minimum Addition to Make Integer Beautiful	Medium	5	0.4%
1890	Minimum Hours of Training to Win a Competition	Easy	5	0.4%
1891	Ant on the Boundary	Easy	5	0.7%
1892	Maximum Number of Points From Grid Queries	Hard	5	0.6%
1893	Find Maximum Value in a Constrained Sequence	Medium	5	0.6%
1894	Unique Morse Code Words	Easy	5	0.8%
1895	Longest Univalue Path	Medium	5	0.4%
1896	Minimum Seconds to Equalize a Circular Array	Medium	5	0.3%
1897	Number Complement	Easy	5	0.7%
1898	Longest Palindrome by Concatenating Two Letter Words	Medium	5	0.5%
1899	Sort Vowels in a String	Medium	5	0.8%
1900	Split Strings by Separator	Easy	5	0.8%
1901	Special Positions in a Binary Matrix	Easy	5	0.7%
1902	Tallest Billboard	Hard	5	0.5%
1903	Word Abbreviation	Hard	5	0.6%
1904	Find Product Recommendation Pairs	Medium	5	0.6%
1905	Median Employee Salary	Hard	5	0.7%
1906	Minimum Changes To Make Alternating Binary String	Easy	5	0.7%
1907	Missing Number In Arithmetic Progression	Easy	5	0.5%
1908	Find All Possible Stable Binary Arrays I	Medium	5	0.5%
1909	Minimum Subarray Length With Distinct Sum At Least K	Medium	5	0.3%
1910	Sum of Variable Length Subarrays	Easy	5	0.9%
1911	Maximum Number of Weeks for Which You Can Work	Medium	5	0.4%
1912	Minimum Impossible OR	Medium	5	0.6%
1913	Minimum Absolute Difference in Sliding Submatrix	Medium	5	0.8%
1914	Grid Teleportation Traversal	Medium	5	0.2%
1915	Exam Room	Medium	5	0.4%
1916	Count Good Meals	Medium	5	0.3%
1917	Equal Sum Grid Partition I	Medium	5	0.5%
1918	Count Submatrices With Equal Frequency of X and Y	Medium	5	0.7%
1919	Design Movie Rental System	Hard	5	0.6%
1920	Matrix Similarity After Cyclic Shifts	Easy	5	0.7%
1921	Add Two Promises	Easy	5	0.9%
1922	Check if Strings Can be Made Equal With Operations II	Medium	5	0.7%
1923	Lexicographically Smallest Generated String	Hard	5	0.5%
1924	Stone Game	Medium	5	0.7%
1925	Final Element After Subarray Deletions	Medium	5	0.4%
1926	The Time When the Network Becomes Idle	Medium	5	0.6%
1927	Distribute Elements Into Two Arrays I	Easy	5	0.7%
1928	Minimum Distance Between Three Equal Elements I	Easy	5	0.7%
1929	Minimum Distance Between Three Equal Elements II	Medium	5	0.7%
1930	Minimum Deletions to Make Array Divisible	Hard	5	0.6%
1931	Properties Graph	Medium	5	0.5%
1932	Final Array State After K Multiplication Operations II	Hard	5	0.1%
1933	Minimum Cost to Make Array Equal	Hard	5	0.5%
1934	Reverse Only Letters	Easy	5	0.7%
1935	Minimum Total Distance Traveled	Hard	5	0.6%
1936	Maximize the Confusion of an Exam	Medium	5	0.7%
1937	Largest Color Value in a Directed Graph	Hard	5	0.6%
1938	Words Within Two Edits of Dictionary	Medium	5	0.7%
1939	Put Boxes Into the Warehouse I	Medium	5	0.7%
1940	Number of Subarrays With LCM Equal to K	Medium	5	0.5%
1941	Minimum Cost to Split into Ones	Medium	5	0.8%
1942	Jump Game VI	Medium	5	0.5%
1943	Design Skiplist	Hard	5	0.6%
1944	Cyclically Rotating a Grid	Medium	5	0.7%
1945	Minimum Cost to Buy Apples II	Hard	5	0.3%
1946	Minimum Swaps to Group All 1's Together	Medium	5	0.6%
1947	Pancake Sorting	Medium	5	0.7%
1948	Smallest Index With Equal Value	Easy	5	0.7%
1949	Sum of Digits of String After Convert	Easy	5	0.7%
1950	Odd Even Jump	Hard	5	0.4%
1951	K-Similar Strings	Hard	5	0.4%
1952	Student Attendance Record I	Easy	5	0.5%
1953	Find the Distinct Difference Array	Easy	5	0.8%
1954	Binary Trees With Factors	Medium	5	0.5%
1955	Score of Parentheses	Medium	5	0.6%
1956	Maximum Total Subarray Value II	Hard	5	0.4%
1957	Employees Whose Manager Left the Company	Easy	5	0.5%
1958	Build an Array With Stack Operations	Medium	5	0.8%
1959	Find Mirror Score of a String	Medium	5	0.4%
1960	Kth Smallest Number in Multiplication Table	Hard	5	0.5%
1961	Number of Ways to Assign Edge Weights II	Hard	5	0.7%
1962	Maximize Sum of Device Ratings	Medium	5	0.4%
1963	Find Minimum Cost to Remove Array Elements	Medium	5	0.2%
1964	Maximum Building Height	Hard	5	0.7%
1965	Maximize Sum Of Array After K Negations	Easy	5	0.5%
1966	Number of Unique Good Subsequences	Hard	5	0.5%
1967	Number of ZigZag Arrays II	Hard	5	0.7%
1968	Collect Coins in a Tree	Hard	5	0.4%

How to read this list

The tabs at the top split the questions by how recently people said they were asked in interviews. "Last 30 Days" is the past month, "Last 3 Months" is the past quarter, and so on. "All Time" is every question on record for this company.

Frequency is a score from 0 to 100 for how often a question showed up in that time window. A higher number means it came up more often, so the list starts with the most common questions first. Acceptance is the share of submissions that pass on LeetCode. Click any question to open it on LeetCode.

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