CrowdStrike LeetCode Questions
11 questions all-time · 3 easy · 7 medium · 1 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | String Compression Two Pointers, String | Medium | 100 | 0.6% |
| 2 | Number of Islands Array, Depth-First Search, Breadth-First Search, Union-Find, Matrix | Medium | 97 | 0.6% |
| 3 | Encode and Decode Strings Array, String, Design | Medium | 89 | 0.5% |
| 4 | Merge Intervals Array, Sorting | Medium | 83 | 0.5% |
| 5 | Time Based Key-Value Store Hash Table, String, Binary Search, Design | Medium | 77 | 0.5% |
| 6 | Move Zeroes Array, Two Pointers | Easy | 67 | 0.6% |
| 7 | Trapping Rain Water Array, Two Pointers, Dynamic Programming, Stack, Monotonic Stack | Hard | 67 | 0.7% |
| 8 | Squares of a Sorted Array Array, Two Pointers, Sorting | Easy | 67 | 0.7% |
| 9 | Course Schedule Depth-First Search, Breadth-First Search, Graph Theory, Topological Sort | Medium | 67 | 0.5% |
| 10 | Valid Parentheses String, Stack | Easy | 67 | 0.4% |
| 11 | Clone Graph Hash Table, Depth-First Search, Breadth-First Search, Graph Theory | Medium | 67 | 0.7% |
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.