Question

Design a class to overload a function SumSeries() as follows:
(i) void SumSeries(int n, double x) – with one integer argument and one double argument to find and display the sum of the series given below:
s = (x/1) – (x/2) + (x/3) – (x/4) + (x/5) … to n terms

(ii) void SumSeries() – To find and display the sum of the following series:
s = 1 + (1 X 2) + (1 X 2 X 3) + … + (1 X 2 X 3 X 4 X … 20)

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Code

public class program7
{
	public void SumSeries(int n, double x)
	{
	    int i=0;
		double sum = 0;
		for (i = 1; i <= n; i++)
		{
			if (i % 2 == 1)
			{
				sum = sum + (x / i);
			}
 			else
 			{
				sum = sum - (x / i);
			}
		}
		System.out.println("Sum = " + sum);
	}
	public void SumSeries()
	{
		int sum = 0,i=0,product=1,j=0;
		for (i = 1; i <= 20; i++)
		{
			product = 1;
			for (j = 1; j <= i; j++)
			{
				product = product * j;
			}
			sum = sum + product;
		}
		System.out.println("Sum = " + sum);
	}
}