| S.No |
Interview Question |
Number of times candidates experienced this question in interviews |
| 1 | Longest Palindrome can be Formed by Removing or Rearranging Characters | 2142 |
| 2 | Check if Two given Strings are Isomorphic to each other | 1614 |
| 3 | Program to Toggle all Characters in a String | 1577 |
| 4 | Check if String Follows Order of Characters by a Pattern or not | 1484 |
| 5 | Sort a String According to Another String | 1470 |
| 6 | Queue using Stacks | 1375 |
| 7 | Find subarray with given sum (Handles Negative Numbers) | 1272 |
| 8 | Print all triplets in sorted array that form AP | 1160 |
| 9 | Insertion in a Binary Tree | 1123 |
| 10 | Maximum Product of Indexes of Next Greater on Left and Right | 1044 |
| 11 | Find number of pairs in an array such that their XOR is 0 | 921 |
| 12 | Iterative method to find ancestors of a given binary tree | 654 |
