leetcode---Reverse Bits
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Reverse bits of a given 32 bits unsigned integer.
For example, given input 43261596 (represented in binary as 00000010100101000001111010011100), return 964176192 (represented in binary as 00111001011110000010100101000000).
Follow up:
If this function is called many times, how would you optimize it?
Related problem: Reverse Integer
class Solution {public: uint32_t reverseBits(uint32_t n) { int i = 0; uint32_t ans = 0; while(n) { if(n & 1) ans += pow(2, 31-i); n >>= 1; i++; } return ans; }}; 0 0
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