Solution I wrote seems OK, yes I receive the error : "The getDistance method must return the distance between the points. " Help please!

Question about the task

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import static java.lang.Math.sqrt;

public class Util {
    public static double getDistance(int x1, int y1, int x2, int y2) {
        //write your code here
        double a = (x2-x1)*(x2-x1)+(y2-y1)*(y2-y1);
        Math.sqrt(a);
        return a;
    }

    public static void main(String[] args) {

    }
}

package com.codegym.task.task06.task0609; /* Distance between two points */ import static java.lang.Math.sqrt; public class Util { public static double getDistance(int x1, int y1, int x2, int y2) { //write your code here double a = ((x2-x1)*(x2-x1))+((y2-y1)*(y2-y1)); Math.sqrt(a); return a; } public static void main(String[] args) { } }

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dhanush

Level 30 , Chennai, India

12 October 2020, 11:31

solution

Have you tried like this

double a = ((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
 double b = Math.sqrt(a);
        return b;

Andrei

Level 41

13 October 2020, 07:06

Yes, this worked! Thank you! I wonder why. Is it because Math.sqrt already does a return as a result and having not declared a variable to store that return it goes nowhere?

dhanush

Level 30 , Chennai, India

12 October 2020, 11:29

Actually when you do this program it goes till the line 14 and then return the line 16, look the line 15 is absolutely lost not lost it's not getting into consideration do like this

double a = Math.sqrt((a*a) + (b*b));

dhanush

Level 30 , Chennai, India

12 October 2020, 08:54

I think the line 15 is not getting considered, it doesn't square root i think so. May be sqrt the value a in the same line 14 or else you can assign a new variable to the sqrt and return that value.

Andrei

Level 41

12 October 2020, 09:58

Hi dhanush, thanks for the quick reply. I tried replacing a with b and got the same result. Can you please detail what you mean by "sqrt the value a in the same line 14 " ? Thanks!