Java Series Programs
Write a program to compute and display the sum of the following series:
S = (1 + 2) / (1 * 2) + (1 + 2 + 3) / (1 * 2 * 3) + -------- + (1 + 2 + 3 + ----- + n ) / (1 * 2 * 3 * ----- * n)
Java
Java Nested for Loops
ICSE 2007
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Answer
import java.util.Scanner;
public class KboatSeries
{
public static void main(String args[]) {
Scanner in = new Scanner(System.in);
System.out.print("Enter n: ");
int n = in.nextInt();
double sum = 0.0;
for (int i = 2; i <= n; i++) {
double num = 0.0, den = 1.0;
for (int j = 1; j <= i; j++) {
num += j;
den *= j;
}
sum = sum + (num / den);
}
System.out.println("Sum=" + sum);
}
}
Variable Description Table
Program Explanation
Output
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