You are given with n pairs of parentheses, generate all combinations of well-formed parentheses.

Merge two sorted linked lists and return it as a new list in C

Given linked list swap Nodes in Pairs, solution in C++

Given a collection of distinct integers, return all possible permutations C++ solution

Given a string of integers, restore all valid IP addresses solution in C++

Word Ladder explanation with solution in CPP

Given a string return all the substring that is a palindrome, solution in CPP

Given a 2D board with X and O, get all the region surrounded by X, explanation in CPP