implementing x^y

mar11

hi all,

how can i implement x^y in java?

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    public static void main(String[] args) {

        // TODO Auto-generated method stub

        int a = 2;

        int c =0;

       c= a^2;

       System.out.println(c);    
 
    }

i get the output c = 0 but it should be 4

thanks

r035198x

Read the API specs for the methods in the java.lang.Math class.

pbrockway2

If you are working with nonnegative integers and you want to actually implement this your self (as a homework or whatever), use a for loop.

Perhaps the section on Effectively Computing a Power in the Wikipedia article on exponentiation may help. It takes a little implementing but it's a nice algorithm.

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