unsigned int reverse_bit(unsigned int value); 这个函数的返回值value的二进制位模式从左到右翻转后的值。

unsigned int reverse_bit(unsigned int value) {
	unsigned int sum = 0;
	for (int i = 0; i < 32; ++i) {
		sum = sum + ((value >> i) & 1)*(unsigned int)pow(2, 31 - i);
	}
	return sum;
}
unsigned int reverse_bit2(unsigned int value) {
	unsigned int temp = 0;
	for (int i = 0; i < 32; ++i) {
		//为了保存获取到的值所以才挪动
		temp = temp << 1;
		//把第i位的值放在temp的最后一位
		temp = temp | ((value >> i) & 1);
	}
	return temp;
}