leetcodeOJ 190. 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).
比较简单，
class Solution {public: uint32_t reverseBits(uint32_t n) { uint32_t ans = 0; int cnt = 0; uint32_t num = n; while(num != 0){ int temp = num % 2; ans <<= 1; ans += temp; num >>= 1; cnt++; } int k = 32-cnt; while(k--){ ans <<= 1; } return ans; }}; 0 0
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