Dropbox LeetCode Questions
22 questions all-time · 2 easy · 10 medium · 10 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | Simple Bank System Array, Hash Table, Design, Simulation | Medium | 100 | 0.7% |
| 2 | Web Crawler String, Depth-First Search, Breadth-First Search, Interactive | Medium | 100 | 0.7% |
| 3 | Web Crawler Multithreaded Depth-First Search, Breadth-First Search, Concurrency | Medium | 100 | 0.5% |
| 4 | Minimize Malware Spread Array, Hash Table, Depth-First Search, Breadth-First Search, Union-Find, Graph Theory | Hard | 100 | 0.4% |
| 5 | Two Sum Array, Hash Table | Easy | 98 | 0.6% |
| 6 | Median of Two Sorted Arrays Array, Binary Search, Divide and Conquer | Hard | 98 | 0.5% |
| 7 | Letter Combinations of a Phone Number Hash Table, String, Backtracking | Medium | 98 | 0.7% |
| 8 | Grid Illumination Array, Hash Table | Hard | 98 | 0.4% |
| 9 | Find Duplicate File in System Array, Hash Table, String | Medium | 98 | 0.7% |
| 10 | Word Break II Array, Hash Table, String, Dynamic Programming, Backtracking, Trie, Memoization | Hard | 98 | 0.6% |
| 11 | Number of Valid Words for Each Puzzle Array, Hash Table, String, Bit Manipulation, Trie | Hard | 98 | 0.5% |
| 12 | Word Pattern Hash Table, String | Easy | 98 | 0.4% |
| 13 | Game of Life Array, Matrix, Simulation | Medium | 98 | 0.7% |
| 14 | Word Pattern II Hash Table, String, Backtracking | Medium | 98 | 0.5% |
| 15 | Design a Text Editor Linked List, String, Stack, Design, Simulation, Doubly-Linked List | Hard | 98 | 0.5% |
| 16 | Check If It Is a Good Array Array, Math, Number Theory | Hard | 98 | 0.7% |
| 17 | Design Hit Counter Array, Binary Search, Design, Queue, Data Stream | Medium | 98 | 0.7% |
| 18 | Seat Reservation Manager Design, Heap (Priority Queue) | Medium | 98 | 0.7% |
| 19 | Minimize Malware Spread II Array, Hash Table, Depth-First Search, Breadth-First Search, Union-Find, Graph Theory | Hard | 98 | 0.5% |
| 20 | Guess the Word Array, Math, String, Interactive, Game Theory | Hard | 80 | 0.4% |
| 21 | Candy Array, Greedy | Hard | 67 | 0.5% |
| 22 | Merge Intervals Array, Sorting | Medium | 57 | 0.5% |
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.