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).
JAVA实现如下：
public int reverseBits(int n) {
return Integer.reverse(n);
}
Java for LeetCode 190 Reverse Bits
原文：http://www.cnblogs.com/tonyluis/p/4557348.html