[LeetCode][Python3] 190. Reverse Bits

Problem :

https://leetcode.com/problems/reverse-bits/

My Solution :

class Solution:

# @param n, an integer

# @return an integer

def reverseBits(self, n):

ans = 0

for _ in range(32):

ans = ans*2 + n%2

n //= 2

return ans

Comment :

위는 산술연산 아래는 비트연산

My Solution2 :

class Solution:

# @param n, an integer

# @return an integer

def reverseBits(self, n):

ans = 0

for _ in range(32):

ans = (ans << 1) + (n & 1)

n >>= 1

return ans