Following is the list of must do interview questions for technical interviews:

1. https://leetcode.com/problems/permutation-in-string/
2. https://leetcode.com/problems/reverse-words-in-a-string-iii/
3. https://leetcode.com/problems/string-compression/
4. https://leetcode.com/problems/rotate-image/
5. https://leetcode.com/problems/sort-colors/
6. https://leetcode.com/problems/move-zeroes/
7. https://www.hackerrank.com/contests/kilobyte-uz-contest1/challenges/trains-and-platforms/problem?source=post_page-----f86ed28d3a50----------------------
   Solution: https://www.geeksforgeeks.org/minimum-number-platforms-required-railwaybus-station/
8. https://www.careercup.com/question?id=5743117907001344
   Solution: https://www.geeksforgeeks.org/leaders-in-an-array/
9. https://www.geeksforgeeks.org/print-matrix-reverse-wave-form/
10. https://leetcode.com/problems/spiral-matrix/
11. https://leetcode.com/problems/reverse-words-in-a-string/
12. https://leetcode.com/problems/palindromic-substrings/