【leetcode】Number of 1 Bits （easy)

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mob604757013b3c 2015-03-17 16:59:00

做太多遍了，秒杀。

class Solution {
public:
    int hammingWeight(uint32_t n) {
        int num = 0;
        for(;n; n &=(n-1), num++);
        return num;
    }
};

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【leetcode】Number of 1 Bits （easy)

【leetcode】Number of 1 Bits （easy)

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