java如何用这段代码显示我的2d数组?
我正在尝试使用二维数组制作一个3x3维(运动区域)。我唯一的问题是,当我运行程序并选择左方向时,3x3维度没有出现。它只显示0。我想看看3x3维。我的代码有什么问题
扫描仪输入=新扫描仪(System.in)
int[][]arr = {{0,0,0},{0,0,0},{0,0,0}};
int turtle =1;
for(int i=0;i<3;i++){
for(int j=0;j<3;j++){
System.out.println ("(1)Left(2)Right(3)Up(4)Down");
int movement = input.nextInt();
if(movement == 1){
if(turtle==1){
turtle = 1;
System.out.println ("Cant move left");
}
if(turtle ==2){
arr[0][0] = 1;
turtle = 3;
}
if(turtle ==3){
arr[0][2] = 1;
turtle = 2;
}
if(turtle ==4){
System.out.println ("Cant move left");
turtle = 4;
}
if(turtle ==5){
arr[1][0] = 1;
turtle = 4;
}
if(turtle ==6){
arr[1][1] = 1;
turtle = 5;
}
if(turtle ==7){
System.out.println ("cant move left");
turtle = 7;
}
if(turtle ==8){
arr[2][0] = 1;
turtle = 7;
}
if(turtle ==9){
arr[2][1] = 1;
turtle = 8;
}
}
System.out.printf ("%d",arr[i][j]);
}
System.out.println ();
}
# 1 楼答案
试试这个
另一种方法是执行以下操作