迷宫算法实现

直接上代码，痛快点。

package algorithm;

import junit.framework.TestCase;

/**
 * Created by Rocky on 14-3-31.
 * 下午7:59
 */
public class MyMaze extends TestCase {

    /**
     * @param maze   0表示可走，1表示不可走，2表示这步已走
     * @param startI 入口横坐标
     * @param startJ 入口竖坐标
     * @param endI   出口横坐标
     * @param endJ   出口竖坐标
     */
    public void resolveMaze(int[][] maze, int startI, int startJ, int endI, int endJ) {

        maze[startI][startJ] = 2;
        System.out.println("*************走一步***************");
        printMaze(maze);

        if (startI == endI && startJ == endJ) {
            System.out.println("********************成功*******************");
            printMaze(maze);
        } else {
            /*向右*/
            if(startJ + 1 < maze[startI].length){
                if(maze[startI][startJ+1]==0 ){
                    resolveMaze(maze, startI, startJ+1, endI, endJ);
                }
            }
            /*向下*/
            if(startI + 1 < maze.length){
                if(maze[startI+1][startJ]==0 ){
                    resolveMaze(maze, startI+1, startJ, endI, endJ);
                }
            }
            /*向上*/
            if(startI -1 >= 0){
                if(maze[startI-1][startJ]==0 ){
                    resolveMaze(maze, startI-1, startJ, endI, endJ);
                }
            }
            /*向左*/
            if(startJ- 1 >=0){
                if(maze[startI][startJ-1]==0 ){
                    resolveMaze(maze, startI, startJ-1, endI, endJ);
                }
            }
        }

        if (maze[startI][startJ] != 0) {
            maze[startI][startJ] = 0;
        }
        System.out.println("*************退一步***************");
        printMaze(maze);
    }

    private void printMaze(int[][] maze) {
        for (int i = 0; i < maze.length; i++) {
            for (int j = 0; j < maze[i].length; j++) {
                if (maze[i][j] == 2) {
                    System.out.print("*\t");
                } else {
                    System.out.print(maze[i][j] + "\t");
                }
            }
            System.out.println();
        }

    }

    public void test() {
        int maze[][] = {
                {0, 0, 3, 3, 3, 3, 3, 3, 3},
                {3, 0, 0, 0, 0, 0, 0, 0, 3},
                {3, 0, 3, 3, 0, 3, 3, 0, 3},
                {3, 0, 3, 0, 0, 3, 0, 0, 3},
                {3, 0, 3, 0, 3, 0, 3, 0, 3},
                {3, 0, 0, 0, 0, 0, 3, 0, 3},
                {3, 3, 0, 3, 3, 0, 3, 3, 3},
                {3, 0, 0, 0, 0, 0, 0, 0, 0},
                {3, 3, 3, 3, 3, 3, 3, 3, 0}};
        resolveMaze(maze,0,0,8,8);
    }
}