Program:

1
2 2
3 3 3
4 4 4 4
5 5 5 5 5

• Program:

  public class NumberPattern1
  {
      public static void main(String[] args)
      {
          for(int i=1; i<=5; i++)
          {
              for(int j=1; j<=i; j++)
              {
                  System.out.print(i+" ");
              }
              System.out.println();
          }
      }
  }