leetcode 79. Word Search (dfs)

2017年4月7日 0 作者 CrazyKK

Given a 2D board and a word, find if the word exists in the grid.

The word can be constructed from letters of sequentially adjacent cell, where “adjacent” cells are those horizontally or vertically neighboring. The same letter cell may not be used more than once.

思路:dfs即可。记得要回溯一下…