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).
Solution:
class Solution {
public:
uint32_t reverseBits(uint32_t n) {
uint32_t r = 0;
for(int i=0;i<32;i++){
int x = n & 1;
r = (r << 1) | x;
n = n >> 1;
}
return r;
}
};
