//Given an integer, write a function to determine if it is a power of two. public class isPowerOfTwo { public static boolean isPowerOfTwo(int n) { if (n == 1) return true; else if (n < 0) return false; else { String str = Integer.toBinaryString(n); for(int i=1;i<str.length();i++) { if('1'==str.charAt(i)) return false; } } return true; } public static void main(String[] args) { System.out.println(isPowerOfTwo(1024)); } }