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Solved 2013 ICSE Computer Science Paper

Class 10 - ICSE Computer Science Solved Papers

Function Overloading - Sum of Series Program - ICSE 2013 Computer Science

Design a class to overload a function series() as follows:

(i) double series(double n) with one double argument and returns the sum of the series,

sum = 1 / 1 + 1 / 2 + 1 / 3 + … + 1 / n.

(ii) double series(double a, double n) with two double arguments and returns the sum of the series,

sum = 1 / a2 + 4 / a5 + 7 / a8 + 10 / a11 + … to n terms.

Java 

class Overload{
    public static double series(double n){
        double sum = 0.0;
        for(int i = 1; i <= n; i++)
            sum += 1.0 / i;
        return sum;
    }
    public static double series(double a, double n){
        double sum = 0.0;
        int num = 1;
        for(int i = 1; i <= n; i++){
            sum += num / Math.pow(a, num + 1);
            num += 3;
        }
        return sum;
    }
    public static void main(String[] args) {
        double x = series(5);
        System.out.println("Sum 1 = " + x);
        double y = series(4, 5);
        System.out.println("Sum 2 = " + y);
    }
}

Output

 
 OUTPUT : 
Sum 1 = 2.283333333333333
Sum 2 = 0.0665154941380024
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