Segregate 0's, 1's and 2's together in an array[O(n)](Dutch National Flag Problem)

3.11 prefix to infix conversion | postfix to infix conversion | example (Data structure)

Infix to Prefix conversion | Examples | Data Structures | Lec-16 | Bhanu Priya

Improving your Algorithms & Data Structure Skills | by Daniel Borowski | Tech x Talent | Medium

Reverse a Doubly Linked List in C