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

Question

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.

What does the expected output represent?

Richard K Yu
– Richard K Yu

2022-01-26 01:20:59 +00:00
Commented Jan 26, 2022 at 1:20 — Richard K Yu
– Richard K Yu, Commented Jan 26, 2022 at 1:20

Richard K Yu · Accepted Answer · 2022-01-26 02:00:38Z

0

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:

answered Jan 26, 2022 at 2:00

Richard K Yu

2,2123 gold badges10 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

GuandaoPrime Over a year ago

Wow thanks, I completely forgot about break, that helps a lot!

Richard K Yu Over a year ago

@GuandaoPrime No problem! Glad I could help.Don’t forget to click the check mark if this resolves your issue.

jluims · Accepted Answer · 2022-01-25 23:54:12Z

0

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();
}

answered Jan 25, 2022 at 23:54

jluims

4023 silver badges6 bronze badges

1 Comment

GuandaoPrime Over a year ago

thank you, and I know that that is a solution, but I am required to use a nested for loop to make this, which is what I cant wrap my head around. I'm able to use a while or do/while loop, but regardless they need to be nested.

Collectives™ on Stack Overflow

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

2 Answers 2

2 Comments

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related