<doocs>0342.Power of Four_1.py
def isPowerOfFour( n: int) -> bool:
    return n > 0 and (n & (n - 1)) == 0 and (n & 0xAAAAAAAA) == 0
def sample_funcname ( var_0 : int ) -> bool :
    return var_0 > 0 and ( var_0 & ( var_0 - 1 ) ) == 0 and ( var_0 & 0xAAAAAAAA ) == 0
