数据结构，Java实现递归回溯，寻找出迷宫路线，解决迷宫问题

public class Labyrinth {
    public static void main(String[] args) {

        //七行八列的迷宫地图
        int[][] map = new int[8][7];

        //设置墙
        for (int i = 0; i < 7; i++) {
            map[0][i] = 1;
            map[7][i] = 1;
        }
        for (int i = 0; i < 8; i++) {
            map[i][0] = 1;
            map[i][6] = 1;
        }
        map[2][1] = 1;
        map[2][2] = 1;

        //查看原地图
        System.out.println("原地图：");
        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 7; j++) {
                System.out.print(map[i][j] + " ");
            }
            System.out.println();
        }

        //走迷宫
        setWay(map, 1, 1);
        //查看走后的迷宫
        System.out.println("走过的：");
        for (int i = 0; i < 8; i++) {
            for (int j = 0; j < 7; j++) {
                System.out.print(map[i][j] + " ");
            }
            System.out.println();
        }
    }

    //使用递归寻找
    //约定0为还没走过，1为墙，2为通路，3为行不通的
    public static boolean setWay(int[][] map, int i, int j){
        if (map[6][5] == 2){
            return true;
        }else {
            if (map[i][j] == 0){
                map[i][j] = 2;
                //策略：下右上左
                if (setWay(map,i+1,j)){
                    return true;
                }else if (setWay(map,i,j+1)){
                    return true;
                }else if (setWay(map,i-1,j)){
                    return true;
                }else if (setWay(map,i,j-1)){
                    return true;
                }else {
                    map[i][j] = 3;
                    return false;
                }
            }else {
                return false;
            }
        }
    }
}