Question

write a program for the given pattern
1
12
123
1234
12345

Answer 1

class pattern
{
public static void main (String args [])
{
System.out.println ("1");
System.out.println ("12");
System.out.println ("123");
System.out.println ("1234");
System.out.println ("12345");
}
}

Answer 2

Easiest program:

package com.company;  

public class Main {

  public static void main(String[] args) {

      int s = 0;

      for (int i = 1; i <= 5 ; i++) {

          s = s*10+i;

          System.out.println(s);

      }

  }

}

Output:

1

12

123

1234

12345