Master these coding challenges to ace your next technical interview. Handpicked problems with personalized spaced repetition.
Showing 25 of 40 problems in SDE Sheet.
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| Status | Title | Difficulty |
|---|---|---|
| 1. Two Sum | Easy | |
| 15. 3Sum | Medium | |
| 31. Next Permutation | Medium | |
| 33. Search in Rotated Sorted Array | Medium | |
| 42. Trapping Rain Water | Hard | |
| 48. Rotate Image | Medium | |
| 53. Maximum Subarray | Medium | |
| 54. Spiral Matrix | Medium | |
| 56. Merge Intervals | Medium | |
| 57. Insert Interval | Medium | |
| 73. Set Matrix Zeroes | Medium | |
| 74. Search a 2D Matrix | Medium | |
| 79. Word Search | Medium | |
| 118. Pascal's Triangle | Easy | |
| 121. Best Time to Buy and Sell Stock | Easy | |
| 128. Longest Consecutive Sequence | Medium | |
| 139. Word Break | Medium | |
| 152. Maximum Product Subarray | Medium | |
| 153. Find Minimum in Rotated Sorted Array | Medium | |
| 169. Majority Element | Easy | |
| 198. House Robber | Medium | |
| 200. Number of Islands | Medium | |
| 215. Kth Largest Element in an Array | Medium | |
| 217. Contains Duplicate | Easy | |
| 238. Product of Array Except Self | Medium |