Find if a number is a power of two without math function or log function

Question

I want to find if a user entered number is a power of two or not.

My code doesn\'t work.

public class power_of_two
{  
    public static void main         


        

Answer 1

A very simple solution.

int n = 8; // any integer and you can take it from user also
for(;n>0;n++){
    if(n%2 != 0) {
        System.out.println("not a power of two")
        return;
    } // if ends here
    n = n/2;
}// for ends here
System.out.println("power of two")