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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 soon).
[CareerCup] 5.6 Swap Odd and Even Bits 交换奇偶位
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原文地址：http://www.cnblogs.com/grandyang/p/4743995.html
