Solution: Word Search
Explore how to apply backtracking and depth-first search techniques to determine if a word exists in a 2D character grid by traversing adjacent cells. Understand how to validate cells, manage visited states, and backtrack when necessary to cover all possible paths. This lesson helps you build a flexible approach to solve word search problems using recursive algorithms.
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Statement
Given an m x n grid of characters, board, and a string word, return TRUE if word exists in the grid.
The word can be formed by connecting letters of sequentially adjacent cells. The cells are considered sequentially adjacent when neighbors are either horizontally or vertically neighbors. Each cell can be used only once while forming the word.
Constraints:
mboard.lengthnboard[i].length, whereim...