Wrong output with for loop in Java

Question

This is a simple program i wrote using for loop

public class Test
{
    public static void main (String[] args)
    {

        int high=10;

        for( int low =0; low <=high; low++){

            for (int mid=0; mid<=high; mid++)
            {
                System.out.print(mid);

            }
            System.out.println();    
        }
    }
}

But I want the output to look like

0 1 2 3 4 5 6 7 8 9 10

1 2 3 4 5 6 7 8 9 10

2 3 4 5 6 7 8 9 10

etc...

10

Instead my output looks like this 012345678910012345678910012345678910012345678910012345678910012345678910012345678910012345678910012345678910012345678910012345678910

What am i doing wrong?

Set mid=low in the second loop and you are also missing the opening { for the same loop. — Mudassir
– Mudassir, Commented Mar 25, 2011 at 4:12

helloworld922 · Accepted Answer · 2011-03-25 04:03:59Z

4

You're not printing out any spaces.

System.out.print(mid + " ");

edit:

In addition, you're starting mid at 0 every time through the inner loop rather than starting it at low.

edited Mar 25, 2011 at 4:03

answered Mar 25, 2011 at 3:58

helloworld922

11k7 gold badges53 silver badges91 bronze badges

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

3 Comments

Pete Over a year ago

Thats not the answer he wants... His numbers keep coming out like 0 1 2 3 4 5 6 7 8 9 10 each time. He wants it to start one number higher each iteration. He has a logic error I just havent been able to work it out.

Tuan Nguyen Over a year ago

This is what i got after the mid+" " 0 1 2 3 4 ect

helloworld922 Over a year ago

Well, it's one of the problems he's getting. Should be fixed now

Brian Roach · Accepted Answer · 2011-03-25 03:59:11Z

2

System.out.print(mid + " ");

and

System.out.println(" ");

Should fix you up.

EDIT: Oh ... well, that and:

for (int mid = low; mid<=high; mid++)

answered Mar 25, 2011 at 3:59

Brian Roach

77k12 gold badges140 silver badges164 bronze badges

1 Comment

Zach L Over a year ago

From the last System.out.println, you can omit the empty string like he did in his code. It will do essentially the same thing.

Ben Campbell · Accepted Answer · 2011-03-25 04:00:57Z

1

You may want to concatenate a space to your System.out call.

System.out.print( mid + " " );

answered Mar 25, 2011 at 4:00

Ben Campbell

4,7662 gold badges33 silver badges34 bronze badges

Comments

Pete · Accepted Answer · 2011-03-25 04:02:37Z

1

Set mid = low in the inner loop.

answered Mar 25, 2011 at 4:02

Pete

10.9k10 gold badges56 silver badges75 bronze badges

Comments

Ramesh Dharan · Accepted Answer · 2011-03-25 04:02:59Z

1

You want to set mid = low, and print spaces as others have noted:

int high=10;

for( int low =0; low <=high; low++)
    for (int mid=low; mid<=high; mid++)
    {
        System.out.print("%d ", mid);

    }
    System.out.println();
 }

Edit: removed the spurious \n.

answered Mar 25, 2011 at 4:02

Ramesh Dharan

8934 silver badges14 bronze badges

Comments

nayakam · Accepted Answer · 2011-03-25 04:04:55Z

1

Following code will do

int high = 10;
    for (int low = 1; low <= high; low++) {
        for (int mid = low; mid <= high; mid++) {
            System.out.print(mid + " ");
        }
        System.out.println();
    }
}

answered Mar 25, 2011 at 4:04

nayakam

4,2717 gold badges44 silver badges64 bronze badges

Comments

Lokesh Sah · Accepted Answer · 2011-03-25 04:06:08Z

1

I hope this gets you what you want :

public class Test
{
    public static void main (String[] args)
    {

    int high=10;

    for( int low =0; low <=high; low++)
    {
        for (int mid=low; mid<=high; mid++) //start from low not 0
        {
            System.out.print(mid+" ");

        }
        System.out.println();

    }
    }
}

answered Mar 25, 2011 at 4:06

Lokesh Sah

2,2935 gold badges23 silver badges33 bronze badges

1 Comment

Tuan Nguyen Over a year ago

Thanks for the help, i guess i forgot to have a do loop nested under the first do loop

Mudassir · Accepted Answer · 2011-03-25 04:33:31Z

0

Try this

public class Test {
    public static void main (String[] args) {

    int high=10;

    for( int low =0; low<=high; low++) {

        for (int mid=low; mid<=high; mid++) {
            System.out.print(mid + " " );

        }

        System.out.println();
    }
  }
}

edited Mar 25, 2011 at 4:33

answered Mar 25, 2011 at 4:08

Mudassir

13.2k8 gold badges64 silver badges92 bronze badges

Collectives™ on Stack Overflow

Wrong output with for loop in Java

8 Answers 8

3 Comments

1 Comment

Comments

Comments

Comments

Comments

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

8 Answers 8

3 Comments

1 Comment

Comments

Comments

Comments

Comments

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related