All companies
Yelp
7 Easy15 Medium5 Hard27 total
| No. | Problem | Difficulty | Frequency |
|---|---|---|---|
| 1 | Two Sum | Easy | |
| 3 | Longest Substring Without Repeating Characters | Medium | |
| 14 | Longest Common Prefix | Easy | |
| 49 | Group Anagrams | Medium | |
| 56 | Merge Intervals | Medium | |
| 126 | Word Ladder II | Hard | |
| 127 | Word Ladder | Hard | |
| 151 | Reverse Words in a String | Medium | |
| 1126 | Active Businesses | Medium | |
| 206 | Reverse Linked List | Easy | |
| 207 | Course Schedule | Medium | |
| 218 | The Skyline Problem | Hard | |
| 242 | Valid Anagram | Easy | |
| 347 | Top K Frequent Elements | Medium | |
| 380 | Insert Delete GetRandom O(1) | Medium | |
| 381 | Insert Delete GetRandom O(1) - Duplicates allowed | Hard | |
| 394 | Decode String | Medium | |
| 1333 | Filter Restaurants by Vegan-Friendly, Price and Distance | Medium | |
| 443 | String Compression | Medium | |
| 1436 | Destination City | Easy | |
| 1455 | Check If a Word Occurs As a Prefix of Any Word in a Sentence | Easy | |
| 564 | Find the Closest Palindrome | Hard | |
| 599 | Minimum Index Sum of Two Lists | Easy | |
| 692 | Top K Frequent Words | Medium | |
| 784 | Letter Case Permutation | Medium | |
| 2038 | Remove Colored Pieces if Both Neighbors are the Same Color | Medium | |
| 2904 | Shortest and Lexicographically Smallest Beautiful String | Medium |
