persistent systems LeetCode Questions
9 questions all-time · 5 easy · 4 medium · 0 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | Minimum Bit Flips to Convert Number Bit Manipulation | Easy | 100 | 0.9% |
| 2 | Longest Common Prefix Array, String, Trie | Easy | 80 | 0.5% |
| 3 | Valid Parentheses String, Stack | Easy | 74 | 0.4% |
| 4 | Group Anagrams Array, Hash Table, String, Sorting | Medium | 74 | 0.7% |
| 5 | Two Sum Array, Hash Table | Easy | 74 | 0.6% |
| 6 | Maximum Subarray Array, Divide and Conquer, Dynamic Programming | Medium | 65 | 0.5% |
| 7 | Longest Substring Without Repeating Characters Hash Table, String, Sliding Window | Medium | 65 | 0.4% |
| 8 | Longest Palindromic Substring Two Pointers, String, Dynamic Programming | Medium | 65 | 0.4% |
| 9 | Merge Sorted Array Array, Two Pointers, Sorting | Easy | 65 | 0.6% |
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.