[leetcode] Reverse Bits

时间:2022-08-17 03:46:10

Reverse Bits

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

Credits:
Special thanks to @ts for adding this problem and creating all test cases.
 
 class Solution
{
public:
uint32_t reverseBits(uint32_t n)
{
int A[] = {};
int i = ;
while(n > )
{
A[i++] = n % ;
n /= ;
} int sum = ;
for(i = ; i < ; i++)
sum = sum * + A[i]; return sum;
}
};