@@ -0,0 +1,259 @@
+/*%0A * Given an integer, write a function to determine if it is a power of two.%0A*/%0A%0Apackage P231_PowerOfTwo;%0A%0Apublic class Solution %7B%0A    public boolean isPowerOfTwo(int n) %7B%0A        //bit%0A    %09if(((n-1)&n) == 0 && n %3E 0) return true;%0A    %09return false;%0A  %7D%0A%7D%0A

add p231