fork download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone {
  9.  
  10.     public static void main (String[] args) throws java.lang.Exception {
  11.  
  12.         // your code goes here
  13.         Scanner sc = new Scanner(System.in);
  14.         int n = sc.nextInt();
  15.         int even = 2;
  16.         int odd = 1;
  17.  
  18.         for(int i=0; i<n; i++) {
  19.  
  20.             for(int j=0; j<=i; j++){
  21.                 if(i%2 != 0) {
  22.                     System.out.printf("%d ",even);
  23.                     even += 2;
  24.                 }
  25.                 else {
  26.                     System.out.printf("%d ",odd);
  27.                     odd += 2;   
  28.                 }
  29.             }
  30.             System.out.printf("\n");
  31.         }
  32.  
  33. 	}
  34. }
Success #stdin #stdout 0.18s 54656KB
comments (?)
stdin
copy 
6
stdout
copy 
1 
2 4 
3 5 7 
6 8 10 12 
9 11 13 15 17 
14 16 18 20 22 24
https://ideone.com/frnXsj
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!