How do I break the output line after every 6 numbers? For-loop

Question

How do I make it so that it is only 6 numbers on each line when using a for-loop? Where and how can I use the System.out.print("\n"); ?

for (int i=0; i<=100; i++) {
   System.out.print(i+",");
}

See [`modulo syntax`](https://stackoverflow.com/q/90238/4636715) — vahdet, Oct 08 '18 at 18:30
@karanshah Breaking out of a loop is not what is asked here. — Mark Rotteveel, Oct 12 '18 at 16:05

GBlodgett · Answer 1 · 2018-10-08T18:43:24.267

1

You can use the % operator to see if i is divisible by 6. Since i starts at zero, we must check to see if the remainder is equal to 5

 for(int i=0;i<=100;i++){
     System.out.print(i+",");
     if(i % 6 == 5) {
        System.out.println();
     }
 }

The % operator

divides one operand by another and returns the remainder as its result.

edited Oct 08 '18 at 18:43

answered Oct 08 '18 at 18:29

GBlodgett

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This will print `0` on the first line, then immediately print `\n`. Change the newline condition to `i % 6 == 5`. – Bucket Oct 08 '18 at 18:32

score 1 · Answer 2 · edited Oct 08 '18 at 19:24

1

I found out I could use a counter and a if

for(int i = 0; i <= 100; i++){
    counter++;
    System.out.print(i + ",");
    if(counter == 6){
        System.out.print("\n");
        counter = 0;
    }
}

edited Oct 08 '18 at 19:24

Feedforward

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answered Oct 08 '18 at 18:48

revl

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6

score 0 · Answer 3 · edited Apr 12 '19 at 23:49

Using Java-8 IntStream and collect:

AtomicInteger atomicInteger = new AtomicInteger(0);
int size = 6;
int startingRange = 1;
int endingRange = 20;
IntStream.rangeClosed(startingRange, endingRange).boxed()
        .collect(Collectors.groupingBy(i -> atomicInteger.getAndIncrement() / size))
        .values().forEach(i -> {
            System.out.println(i.toString().replaceAll("\\[", "").replaceAll("]", ""));
        });

How do I break the output line after every 6 numbers? For-loop

3 Answers3