| S.No |
Interview Question |
Number of times candidates experienced this question in interviews |
| 1 | First Repeating Element | 5229 |
| 2 | Find the Maximum Repeating Number in Array | 4430 |
| 3 | Find Triplet in Array With a Given Sum | 2323 |
| 4 | A Product Array Puzzle | 2240 |
| 5 | Count of Triplets With Sum Less than Given Value | 1768 |
| 6 | Best Time to Buy and Sell Stock LeetCode Solution | 1755 |
| 7 | Printing brackets in Matrix Chain Multiplication Problem | 1747 |
| 8 | Coin Change 2 Leetcode Solution | 1681 |
| 9 | Asteroid Collision LeetCode Solution | 1622 |
| 10 | Trapping Rain Water Leetcode Solution | 1569 |
| 11 | Word Ladder LeetCode Solution | 1535 |
| 12 | Maximum Product of Three Numbers LeetCode Solution | 1516 |
| 13 | Product of Array Except Self LeetCode Solution | 1491 |
| 14 | Length of Longest valid Substring | 1487 |
| 15 | Group Anagrams LeetCode Solution | 1466 |
| 16 | Minimum operation to make all elements equal in array | 1387 |
| 17 | Count of index pairs with equal elements in an array | 1359 |
| 18 | Difference between highest and least frequencies in an array | 1325 |
| 19 | Three way partitioning of an array around a given range | 1316 |
| 20 | Check if all Rows of a Matrix are Circular Rotations of Each Other | 1304 |
| 21 | Time Based Key-Value Store LeetCode Solution | 1303 |
| 22 | Priority Queue using doubly linked list | 1266 |
| 23 | LRU Cache Implementation | 1265 |
| 24 | Construct Binary Tree from Given Inorder and Preorder Traversals | 1262 |
| 25 | Longest subarray not having more than K distinct elements | 1189 |
| 26 | Pairs of Songs With Total Durations Divisible by 60 LeetCode Solution | 1123 |
| 27 | Insert Delete GetRandom O(1) Leetcode Solution | 1105 |
| 28 | Check if a given array contains duplicate elements within k distance from each other | 1103 |
| 29 | Find Median from Data Stream LeetCode Solution | 1075 |
| 30 | Increasing Subsequence of Length three with Maximum Product | 1070 |
