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class Solution: # @param n, an integer # @return an integer def reverseBits(self, n): oribin='{0:032b}'.format(n) reversebin=oribin[::-1] return int(reversebin,2)

Very pythonic

What the function of '032'? Is it same with 0>32b?

similar solution:

def reverseBits(self, n): return int(bin(n)[2:].zfill(32)[::-1], 2)

return False if you are doing this on interview else True

real bit manipulation:

def reverseBits(self, n): res = 0 for _ in xrange(32): res = (res<<1) + (n&1) n>>=1 return res

@Seasean

could you please tell me why my code doesn't work?

def reverseBits(self, n): if n == 0: return 0 result = 0 for i in range(32): result << 1 if n & 1 == 1: result += 1 n >> 1 return result

result += 1 did int number +1, not binary add. why yours work? thank you in advance!

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