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Deeer
Deeer

Reputation: 21

Calculating the power of something using while loop in java

I have been asked to calculate the result of x to the power of n using a while loop in java. This is my code:

public static double power(double x, int n){
    int i = 1;
    double y = 1.0;
    while(i<=n){                      
        i = i+1;
        y = y*x;                
        return y;
    }
    return y;
}

It is not working because it just returns the original x. I can't figure out what is wrong x_x

Upvotes: 0

Views: 6582

Answers (1)

Eran
Eran

Reputation: 394126

You are returning y after the first multiplication, which causes the value 1*x to be returned.

Don't return y inside the loop. Only return it after the loop is done.

while(i<=n){                      
    i = i+1;
    y = y*x;                
    return y; // remove this line
}
return y;

Upvotes: 1

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