[Leetcode] 191. Number of 1 Bits 解题报告
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题目:
Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight).
For example, the 32-bit integer ’11' has binary representation 00000000000000000000000000001011
, so the function should return 3.
思路:
也是送分题目。。。
代码:
class Solution {public: int hammingWeight(uint32_t n) { int hamming_weight = 0; while (n > 0) { hamming_weight += (n % 2); n /= 2; } return hamming_weight; }};
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