Problems
150 problems
| # | Title | Difficulty | Category | Statusi | Last | |
|---|---|---|---|---|---|---|
| 1 | Two Sum75 | Easy | Arrays & Hashing | Fading(3) | May 5 | |
| 36 | Valid Sudoku | Medium | Arrays & Hashing | New | — | |
| 49 | Group Anagrams75 | Medium | Arrays & Hashing | Fading(2) | May 7 | |
| 128 | Longest Consecutive Sequence75 | Medium | Arrays & Hashing | Strong(2) | May 12 | |
| 217 | Contains Duplicate75 | Easy | Arrays & Hashing | Strong(3) | May 13 | |
| 238 | Product of Array Except Self75 | Medium | Arrays & Hashing | Strong(2) | May 11 | |
| 242 | Valid Anagram75 | Easy | Arrays & Hashing | Strong(4) | May 12 | |
| 271 | Encode and Decode Strings75 | Medium | Arrays & Hashing | New | — | |
| 347 | Top K Frequent Elements75 | Medium | Arrays & Hashing | Strong(2) | May 12 | |
| 11 | Container With Most Water75 | Medium | Two Pointers | Weak(2) | May 3 | |
| 15 | 3Sum75 | Medium | Two Pointers | New | — | |
| 42 | Trapping Rain Water | Hard | Two Pointers | Weak(3) | May 1 | |
| 125 | Valid Palindrome75 | Easy | Two Pointers | Good(2) | May 8 | |
| 167 | Two Sum II Input Array Is Sorted | Medium | Two Pointers | New | — | |
| 3 | Longest Substring Without Repeating Characters75 | Medium | Sliding Window | Strong(2) | May 11 |