| S.No |
Interview Question |
Number of times candidates experienced this question in interviews |
| 1 | Valid Parentheses LeetCode Solution | 5890 |
| 2 | Sqrt(x) Leetcode Solution | 4103 |
| 3 | Merge Sorted Arrays Leetcode Solution | 3789 |
| 4 | Number of Islands LeetCode Solution | 2952 |
| 5 | Smallest window in a string containing all characters of another string | 2839 |
| 6 | A Product Array Puzzle | 2207 |
| 7 | Asteroid Collision LeetCode Solution | 1564 |
| 8 | Trapping Rain Water Leetcode Solution | 1517 |
| 9 | Word Ladder LeetCode Solution | 1488 |
| 10 | Find Duplicates in an Array in Most Efficient Way | 1479 |
| 11 | Product of Array Except Self LeetCode Solution | 1466 |
| 12 | Max stack | 1417 |
| 13 | Time Based Key-Value Store LeetCode Solution | 1273 |
| 14 | Range Sum Query 2D – Immutable Leetcode Solution | 1154 |
| 15 | Largest Rectangle in Histogram LeetCode Solution | 1060 |
| 16 | Merge Two Sorted Arrays | 896 |
| 17 | Minimum Number of Taps to Open to Water a Garden LeetCode Solution | 852 |
| 18 | Merging Two Sorted Arrays | 818 |
| 19 | Range Sum Query 2D – Immutable LeetCode Solution | 653 |
| 20 | Design Add and Search Words Data Structure LeetCode Solution | 590 |
