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  1. public class Main {
  2.     public static void main(final String[] args) {
  3.         String str = "helloworldnewday";
  4.         double length = Math.sqrt(str.length());
  5.         int x = (int) length;
  6.         for (int i = 0, len = str.length(); i < len; i++) {
  7.             System.out.print(str.charAt(i) + " ");
  8.             if (i % x == x - 1) {
  9.                 System.out.println();
  10.             }
  11.         }
  12.     }
  13. }
Success #stdin #stdout 0.08s 33976KB
comments (?)
stdin 
Standard input is empty
stdout 
h e l l 
o w o r 
l d n e 
w d a y
https://ideone.com/yO8ogP
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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