2020-03-24
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NPTEL WEEK 8 Q 3 : JAVA Programming Solution 2020

Java Week 8: Q3

Due on 2020-03-26, 23:59 IST

Write a program which will print a pyramid of "numbers" 's of height "n" and print the sum of all number's in the pyramid.

For example:

input: 5

output:

1 2 3

1 2 3 4 5

1 2 3 4 5 6 7

1 2 3 4 5 6 7 8 9

Note: Spaces must be exactly same as in the example for correct evaluation.

File name for this program :

import java.util.*;
  public class Pattern3 {
    public static void main(String[] args) {
        Scanner inr = new Scanner(System.in);
       int n = inr.nextInt();
        // Add the necessary code in the below space
      int k = 1,sum=0;
        for(int i = 1; i <= n; ++i, k = 1) {
            for(int space = 1; space <= n-i; ++space) {
                System.out.print("  ");
            }
            while(k <= 2 * i - 1) {
                System.out.print(k+" ");
                sum=sum+k;
                ++k;
            }
            System.out.println();
        }
         System.out.println(sum); 
    }
}   