[第二轮] 3/25-3/31 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, and so on).

发帖规范:
http://www.1point3acres.com/bbs/thread-48094-1-1.html
http://www.1point3acres.com/bbs/thread-32423-1-1.html

Use two masks 0xaaaaaaaa and 0x55555555 and things will be easy.
https://github.com/moophis/careercup/blob/master/5.6.cpp

use 0xaaaa and 0x5555
gist: https://gist.github.com/sing1ee/5244027

*still no feeling about bit manipulation...
*method: process the odd and even bits separately

https://github.com/1094401996/Ca ... vedot6/SwapBit.java

https://gist.github.com/Jnight/5255132

https://gist.github.com/ThunderXu/5276835
Mask, shift and use "OR" operator