import java.util.*; public class Solution { /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param board char字符型二维数组 * @return char字符型二维数组 */ public char[][] solve (char[][] board) { int m = board.length, n = board[0].length; int[][] dirs = new int[][] {{1, 0}, {-1, 0}, {0, 1}, {0, -1}}; boolean[][...