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Anónimo
Asked: 2020-04-14 03:59:27 +0800 CST 2020-04-14 03:59:27 +0800 CST

I don't know what happens in this algorithm of division between floats

  • 772

The expected result is 0.5f but in this algorithm what I get is 0.0f. What am I doing wrong?

public class AlgoritmoDeSequencia
{
    private int n;
    public AlgoritmoDeSequencia()
    {
        this.n = n;
    }

    public void algoritmo()
    {
        n = 2;
        float primario = 1/n;
        System.out.println(primario);
    }
}
java

3 Answers

  1. You're dividing two whole numbers, and that completely eliminates the fractional part, since the result is a whole number.

    In the method algoritmo()do the following:

    float primario = 1f / n;
    • 2
  2. Best Answer

    Considering santiagames ' answer , your algorithm should look like this:

    public class AlgoritmoDeSequencia {
    private int n;

    public AlgoritmoDeSequencia(){
        this.n = 2;
    }

    public void algoritmo(){
        System.out.println(1f/n);
        // otras opciones validas
        System.out.println(1.0/n);
        System.out.println((float)1/n);
        System.out.println(1f * 1/n);
    }
}
    • 0

  3. Hello, your problem is that you are dividing two integers and, therefore, the result of the division is an integer.

    Therefore, you will need at least one of the two (divisor or dividend) to be double or float.

    try the following

    float primario = 2f/n;

    A clearer example, taken from the web http://www.mathcs.emory.edu/~cheung/Courses/170/Syllabus/04/mixed.html enter image description here

    Cheers

    • -1