comefrom: <awangdev>Power of Two_1.java
code: public boolean isPowerOfTwo(int n) {
          if (n <= 0) {
              return false;
          }
          while (n != 1) {
              if (n % 2 != 0 || n / 2 == 0) {
                  return false;
              }
              n/=2;
          }
          return true;
      }
masked: public boolean var_0 ( int var_1 ) {
    if ( var_1 <= 0 ) {
      return false ;
    }
    while ( var_1 != 1 ) {
      if ( var_1 % 2 != 0 || var_1 / 2 == 0 ) {
        return false ;
      }
      var_1 /= 2 ;
    }
    return true ;
  }
  