題目連接

https://leetcode.com/problems/number-of-1-bits/??

Number of 1 Bits

Description

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.

class Solution { public:int hammingWeight(uint32_t n) {int ans = 0;while (n) {ans += n & 1;n >>= 1;}return ans;} };

轉載于:https://www.cnblogs.com/GadyPu/p/5028203.html

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