Java蛇形数组的简单实现代码

    private void snakeMatric(int w, int h){
        int x,y;//x，y坐标。
        int[][] numberMatric = new int[w][h];
        int num = numberMatric[x = 0][y = 0] = 1;
        while(num < w*h){
            //往右移动
            while(y+1 < w && numberMatric[x][y+1] == 0/*数组的项未填充时，其默认值为0*/){
                y++;
                numberMatric[x][y] = ++num;
            }
            //往下移动
            while(x+1<h && numberMatric[x+1][y] == 0){
                x++;
                numberMatric[x][y] = ++num;
            }
            //往左移动
            while(y-1>=0 && numberMatric[x][y-1] == 0){
                y--;
                numberMatric[x][y] = ++num;
            }
            //往上移动
            while(x-1>=0 && numberMatric[x-1][y] == 0){
                x--;
                numberMatric[x][y] = ++num;
            }
        }
        //打印输出
        for(x = 0;x < w;x++){
            for(y = 0;y < h;y++){
                System.out.printf("%4d",numberMatric[x][y]);
            }
            System.out.println();//换行
        }
    }