| 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 | 4956 |
| 2 | Reverse a String using Stack | 2736 |
| 3 | Implementation of Deque using Doubly Linked List | 1951 |
| 4 | Convert array into Zig-Zag fashion | 1621 |
| 5 | Most Frequent Element in an Array | 1595 |
| 6 | Minimum swaps required to bring all elements less than or equal to k together | 1510 |
| 7 | Implement a stack using single queue | 1507 |
| 8 | Maximum Distance Between two Occurrences of Same Element in Array | 1397 |
| 9 | Difference between highest and least frequencies in an array | 1294 |
| 10 | How to Implement Stack Using Priority Queue or Heap? | 1238 |
| 11 | Minimum Operations to convert X to Y | 1235 |
| 12 | Find the Subarray of given length with Least Average | 1203 |
| 13 | Iterative Method to find Height of Binary Tree | 1179 |
| 14 | Reverse a Stack Using Recursion | 1141 |
| 15 | Check if stack elements are pairwise consecutive | 1131 |
| 16 | Top K Frequent Words | 1131 |
| 17 | Tracking current Maximum Element in a Stack | 1100 |
| 18 | Maximum Consecutive Numbers Present in an Array | 1055 |
| 19 | Tower Of Hanoi | 1055 |
| 20 | Stack Permutations (Check if an array is stack permutation of other) | 1050 |
| 21 | Priority Queue in C++ | 966 |
| 22 | Morris Traversal | 945 |
| 23 | Minimum Characters to be Removed to Make a Binary String Alternate | 934 |
| 24 | Print Fibonacci sequence using 2 variables | 912 |
| 25 | Remove brackets from an algebraic string containing + and – operators | 907 |
| 26 | Longest subsequence such that difference between adjacents is one | 905 |
| 27 | How to Efficiently Implement k Stacks in a Single Array? | 892 |
| 28 | Maximum Number of Chocolates to be Distributed Equally Among k Students | 874 |
| 29 | Change the Array into Permutation of Numbers From 1 to N | 872 |
| 30 | Rearrange array such that even index elements are smaller and odd index elements are greater | 869 |
