Need Help working with Nested For loop to display a block of text (Java)-CodePudding

I need to make a block of text that looks like this:

1 1 4

1 2 3

1 3 2

1 4 1

I have currently got this code:

for (int x = 1; x <= 4; x  ) {
 for (int y = 4; y >= 1; y--) {
  System.out.println("1 "   x   " "   y);
 }
 System.out.println();
}

but it outputs the wrong thing, as

1 1 4

1 1 3

1 1 2

1 1 1

1 2 4

1 2 3

1 2 2

1 2 1

1 3 4

1 3 3

1 3 2

1 3 1

1 4 4

1 4 3

1 4 2

1 4 1

Can somebody help me? is it something with my loop syntax or something that has to do with the insides? Plus im new here, please dont be too harsh.

CodePudding user response：

Your loop logic is incorrect. You have two loops and each runs 4 times so in total, your loop runs 16 times which isn't what you want. You want something like this.

for (int x = 1; x <= 4; x  ) {
    int y = 4 - x   1;
    System.out.println("1 "   x   " "   y);
    System.out.println();
}

CodePudding user response：

It is a little strange, but one way you can do this with a nested loop is to break out of the inner loop and to have the logic that zvxf has in the inner loop instead of as a variable:

for (int x = 1; x <= 4; x  ) {
        for (int y = 5-x; y >= 1; y--) {
        System.out.println("1 "   x   " "   y);
        break;
        }
    System.out.println();
}

Output:

CodePudding user response：

Each loop will go on util the number reaches 4 or 1, maybe just write down the logic on the sketch paper first, my friend. :D