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Computer Applications

Write Java program to find the sum of the given series:

1 + (1+2) + (1+2+3) + ………. + (1+2+3+ …… + n)

Java

Java Nested for Loops

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Answer

import java.util.Scanner;

public class KboatSeriesSum
{
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        System.out.print("Enter n: ");
        int n = in.nextInt();
        long sum = 0;
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= i; j++) {
                sum += j;
            }
        }
        System.out.println("Sum=" + sum);
    }
}

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