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Grammarly LeetCode Interview Questions

30 questions all-time · 7 easy · 19 medium · 4 hard

Grammarly has asked 30 distinct LeetCode questions across all recorded interviews: 7 easy, 19 medium and 4 hard. The questions reported most often are Merge Intervals, Remove All Adjacent Duplicates In String and Search in Rotated Sorted Array. 3 of them were reported in interviews from the Last 30 Days window. Every question links straight to LeetCode, and the list can be filtered by difficulty and topic or sorted by how often the question comes up.

# Problem Difficulty Frequency Acceptance
1Merge Intervals
Medium
100
0.5%
2Remove All Adjacent Duplicates In String
Easy
91
0.7%
3Search in Rotated Sorted Array
Medium
90
0.5%
4Vowel Spellchecker
Medium
89
0.6%
5Insert Delete GetRandom O(1)
Medium
89
0.6%
6Remove All Adjacent Duplicates in String II
Medium
87
0.6%
7Climbing Stairs
Easy
84
0.5%
8Repeated DNA Sequences
Medium
80
0.5%
9Sqrt(x)
Easy
78
0.4%
10Generate Parentheses
Medium
75
0.8%
11Perfect Number
Easy
73
0.5%
12Logger Rate Limiter
Easy
73
0.8%
13Sum of Left Leaves
Easy
73
0.6%
14Search Insert Position
Easy
66
0.5%
15Non-overlapping Intervals
Medium
66
0.6%
16Evaluate Reverse Polish Notation
Medium
61
0.6%
17Two Best Non-Overlapping Events
Medium
61
0.6%
18Word Break II
Hard
55
0.6%
19Word Search
Medium
55
0.5%
20Implement Trie (Prefix Tree)
Medium
55
0.7%
21Check If a String Contains All Binary Codes of Size K
Medium
55
0.6%
22Minimum Substring Partition of Equal Character Frequency
Medium
55
0.4%
23Word Break
Medium
46
0.5%
24Number of Islands
Medium
46
0.6%
25Special Binary String
Hard
46
0.8%
26Decode the Slanted Ciphertext
Medium
46
0.7%
27Maximum Palindromes After Operations
Medium
46
0.5%
28Trapping Rain Water
Hard
46
0.7%
29Unique Paths
Medium
46
0.7%
30Recover a Tree From Preorder Traversal
Hard
46
0.8%

Where this data comes from

These questions come from the public leetcode-company-wise-problems data set, which collects interview reports from candidates. They are community-reported rather than published by Grammarly, so treat the list as a strong signal of what gets asked, not an official or exhaustive syllabus. Last refreshed .

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. It is a relative popularity signal within Grammarly's questions, not a probability that you will be asked it. Acceptance is LeetCode's own share of submissions that pass for that problem, across all users, not something specific to Grammarly. Click any question to open it on LeetCode.

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