CareerCup-5.6
Write a program to swap odd and even bits in an integer with as few instructions as possible (e g , bit 0 and bit 1 are swapped, bit 2 and bit 3 are swapped, etc)
嘿嘿，这个题小Case
#include <iostream>
using namespace std;
int swapBits(int d)
{
return ((d & 0xAAAAAAAA) >> 1) + ((d & 0x55555555) << 1);
};
int main()
{
cout<<swapBits(1)<<endl;
system("pause");
};
