Swap Nodes in Pairs – LeetCode 24 Solution

If you’re a LeetCode enthusiast or just starting out, you might have encountered the problem Swap Nodes in Pairs (LeetCode 24). This is a classic problem that involves swapping adjacent nodes in a linked list. Understanding how to solve this problem is crucial for mastering linked list manipulation and performing well in coding interviews. In … Read more

Valid Parentheses | Leetcode 20 Solution

Valid Parentheses - Leetcode 20 Solution

Introduction to Valid Parentheses The “Valid Parentheses” problem (Leetcode 20) is a popular question often asked in coding interviews. The task is to check if a given string containing just the characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[‘ and ‘]’ is valid. An input string is valid if the brackets are correctly closed and nested. In … Read more