Why is this not working?

Question about the task

Under discussion

public static double percent(double a, double b) { return (a * b) / 100; * I changed parameters from int to double, expecting to return a decimal type number. This test only accepts parameter multiplied by 1.0, I understand this forces the compiler, but former should have worked.....

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Thomas

Level 41 , Bayreuth, Germany

22 October 2022, 16:47

If you changed a methods signature and you weren't supposed to do so, then validation may not accept that.

Amber Singh Rathour Pandey

Level 8 , Delhi, India

23 October 2022, 11:38

So, My way works anyway, right? It's just that validation quite demanding.

Thomas

Level 41 , Bayreuth, Germany

23 October 2022, 14:52

useful

The task creators probably intended you to be aware of integer division.

int a = 5,
    b = 10;

System.out.println(a / b); // int division -> 0
System.out.println(a / b * 1.0); // int division, result implicit casted to double -> 0.0
System.out.println(a * 1.0 / b); // double division -> 0.5, implicit casting of a to double, then b to double
System.out.println(a / (double) b); // double division -0.5, explicit casting of b to double, implicit casting of a to double