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#
Authors:
Stuart Reges, Marty Stepp
Chapter:
Conditional Execution
Exercise:
Exercises
Question:1 | ISBN:9780136091813 | Edition: 2

Question

Write a method called fractionSum that accepts an integer parameter n and returns as a double the sum of the first n terms of the sequence

In other words, the method should generate the following sequence:

You may assume that the parameter n is nonnegative.

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Answer

Program:

public class Ch04Ex01
{
	public static void main(String[] args)
	{
		System.out.println("fractionSum(1): " + fractionSum(1));
		System.out.println("fractionSum(20): " + fractionSum(20));
	}

	public static double fractionSum(int n)
	{
		double fsum = 0.0;

		for(int i = 1; i <= n; i++)
		{
			fsum += (1.0 / i);
		}

		return fsum;
	}
}

Output:

fractionSum(1): 1.0
fractionSum(20): 3.597739657143682

 

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