LeetCode上reverse bits的C++解法
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题目如下:
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).
题目思路还是很简单的,我们将10进制数转为2进制数,是不断的除以2取余数,然后把余数倒着写,就是2进制数,而这次,我们只需用10进制数不断除以2取余,将余数正着写即可,需要注意不满32位,要补零。代码如下class Solution {public: uint32_t reverseBits(uint32_t n) { uint32_t temp = 0; for(int i = 0;i < 32;i++){ temp = temp*2 + n%2; n = n/2; } return temp; }};
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