用JAVA编写二维随机行走问题

用JAVA编写二维随机行走问题

public static void main(String[] args) {
// int[] a = new int[]{1,2,3,4};//1 2 3 4 代表上下左右移动
Random r = new Random();

int i = 100;
int[] avgs = new int[4];
Arrays.fill(avgs, 0);//给avgs赋值为0;
for(i = 100;i>0;i--){
int walk = r.nextInt(4)+1;
//这里就按得到的walk走
switch (walk) {
case 1:
//上走一步
avgs[0]++;
break;
case 2:
//下走一步
avgs[1]++;
break;
case 3:
//左走一步
avgs[2]++;
break;
case 4:
//右走一步
avgs[3]++;
break;
default:
//错误不走
break;
}
}
for(int j = 0;j System.out.println(j+"方向走了多少步："+avgs[j]+" ");
}

}