Karat LeetCode Questions
15 questions all-time · 4 easy · 9 medium · 2 hard
| # | Problem | Difficulty | Frequency | Acceptance |
|---|---|---|---|---|
| 1 | Text Justification Array, String, Simulation | Hard | 100 | 48.2% |
| 2 | Check if Every Row and Column Contains All Numbers Array, Hash Table, Matrix | Easy | 90 | 52.8% |
| 3 | Find Words That Can Be Formed by Characters Array, Hash Table, String, Counting | Easy | 89 | 71.1% |
| 4 | Word Search Array, String, Backtracking, Depth-First Search, Matrix | Medium | 86 | 45.3% |
| 5 | Alert Using Same Key-Card Three or More Times in a One Hour Period Array, Hash Table, String, Sorting | Medium | 80 | 45.9% |
| 6 | Course Schedule Depth-First Search, Breadth-First Search, Graph, Topological Sort | Medium | 61 | 49.2% |
| 7 | Ransom Note Hash Table, String, Counting | Easy | 61 | 64.5% |
| 8 | Valid Sudoku Array, Hash Table, Matrix | Medium | 55 | 62.3% |
| 9 | Number of Islands Array, Depth-First Search, Breadth-First Search, Union Find, Matrix | Medium | 55 | 62.3% |
| 10 | Maximal Square Array, Dynamic Programming, Matrix | Medium | 55 | 48.8% |
| 11 | Subdomain Visit Count Array, Hash Table, String, Counting | Medium | 48 | 76.8% |
| 12 | Word Search II Array, String, Backtracking, Trie, Matrix | Hard | 48 | 37.3% |
| 13 | Course Schedule II Depth-First Search, Breadth-First Search, Graph, Topological Sort | Medium | 48 | 53.4% |
| 14 | Jump Game Array, Dynamic Programming, Greedy | Medium | 48 | 39.5% |
| 15 | Two Sum Array, Hash Table | Easy | 48 | 55.8% |
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.