I invested 6+ hours to create this cheatsheet of 53 DSA problem-solving patterns & 265 problems of the 6 most commonly asked important data structures in interviews. (Problems are at the end) 1.

write a function two check the given input is palindrome or not. Input is a number and you can't convert number to string. Check if Number 12321 is Palindrome or not. First Phase: Q1. Print repeating ...

Note: Some of the code here is old and was written when I was learning C++. It might be possible that code is not safe or making wrong assumptions. Please use with caution. Pull requests are always ...