| S.No |
Interview Question |
Number of times candidates experienced this question in interviews |
| 1 | Check length of a String is Equal to the Number Appended at its Last | 6527 |
| 2 | Reverse a String using Stack | 4878 |
| 3 | Implementation of Deque using Doubly Linked List | 3408 |
| 4 | Convert array into Zig-Zag fashion | 3301 |
| 5 | Minimum swaps required to bring all elements less than or equal to k together | 2810 |
| 6 | Most Frequent Element in an Array | 2562 |
| 7 | Minimum Operations to convert X to Y | 2492 |
| 8 | Implement a stack using single queue | 2404 |
| 9 | Maximum Distance Between two Occurrences of Same Element in Array | 2393 |
| 10 | Difference between highest and least frequencies in an array | 2012 |
| 11 | Maximum Consecutive Numbers Present in an Array | 1893 |
| 12 | Longest subsequence such that difference between adjacents is one | 1880 |
| 13 | How to Implement Stack Using Priority Queue or Heap? | 1856 |
| 14 | Iterative Method to find Height of Binary Tree | 1829 |
| 15 | Tracking current Maximum Element in a Stack | 1806 |
| 16 | Stack Permutations (Check if an array is stack permutation of other) | 1797 |
| 17 | Reverse a Stack Using Recursion | 1742 |
| 18 | Number of NGEs to the Right | 1712 |
| 19 | Priority Queue in C++ | 1708 |
| 20 | Top K Frequent Words | 1687 |
| 21 | Tower Of Hanoi | 1651 |
| 22 | Check if stack elements are pairwise consecutive | 1623 |
| 23 | Find the Subarray of given length with Least Average | 1619 |
| 24 | Maximum Number of Chocolates to be Distributed Equally Among k Students | 1616 |
| 25 | Rearrange array such that even index elements are smaller and odd index elements are greater | 1532 |
| 26 | Maximize Elements Using Another Array | 1453 |
| 27 | How to Efficiently Implement k Stacks in a Single Array? | 1451 |
| 28 | Morris Traversal | 1424 |
| 29 | Print Fibonacci sequence using 2 variables | 1414 |
| 30 | Remove brackets from an algebraic string containing + and – operators | 1402 |
