Harmonic Number In Java Example

Chapter: Math Class Last Updated: 05-05-2016 18:51:57 UTC

Program:

            /* ............... START ............... */
                
public class JavaHarmonicNumber {

	public static void main(String[] args) {

		int x = Integer.parseInt(args[0]);

		// compute 1/1 + 1/2 + 1/3 + ... + 1/x
		double sum = 0.0;
		for (int i = 1; i <= x; i++) {
			// sum += 1.0 / i;
			sum = sum + (1.0 / i);
		}

		System.out.println(sum);
	}
}
                /* ............... END ............... */
        

Output

# java Harmonic 1
1.0

# java Harmonic 2
1.5

# java Harmonic 10
2.9289682539682538

Tags

Harmonic Number, Java, Math

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