printing certain number of characters per line

[DerPflug]

I have an array of integers that I want to print a certain number of characters per line. For instance, I have an array of 10 integers and I want to print 3 integers per line:

9 1 8 3 7 3 7 4 6 5

to print like this:

9 1 8
3 7 3
7 4 6
5

Thanks in advance.

 

[HavaTheJut]

String line = "";
int[] intArray = {9,1,8,3,7,3,7,4,6,5};
int numPerLine = 3;
String sep = " ";

for (int i=0; i<intArray.length; i++)
{
  if (line.length > 0)
  {
    line += sep;
  }
  String line += intArray[i];
  if ((i+1) % numPerLine == 0)
  {
    System.out.println(line);
    line = &quot;&quot;;
  }
}

The i+1 ensures that a single element is not printed the first time (0 mod 3 is 0).

-HavaTheJut

 

[HavaTheJut]

Oops. You also need another println(line) after the for loop to take care of the remainder.

 

[DerPflug]

Many thanks!