Program:

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• Program:

  public class NumberPattern3
  {
      public static void main(String[] args)
      {
          int count = 0;
          
          for(int i=1; i<=4; i++)
          {
              for(int j=1; j<=i; j++)
              {
                  count = count+1;
                  System.out.print(count+" ");
              }
              System.out.println();
          }
      }
  }