Detect Cycles in 2D Grid | LeetCode 1559 🔥 | Graph + BFS Intuition Explained

You are given a 2D array of characters "grid" of size m x n, where each cell contains a lowercase English letter. Code: https://leetcode.com/problems/detect-... You need to determine whether there exists a cycle in the grid. A cycle is defined as a path of length 4 or more in the grid that starts and ends at the same cell. From a cell, you can move to its adjacent cells (up, down, left, right) if they have the same character. You cannot move back to the cell you came from in the previous step. Return true if any cycle exists in the grid, otherwise return false. Problem Link: https://leetcode.com/problems/detect-... Topics: Graph, DFS, BFS, Matrix, Union Find #leetcode #leetcode1559 #dailyleetcode #graph #dfs #bfs #matrix #codinginterview #dsa #placementprep #softwareengineer