标签：rip image 位移 class pre mic UNC return 操作
解法：
var hammingWeight = function (n) {
let ans = 0;
let mask = 1;
for (let i = 0; i < 32; i++) {
ans += (n & mask) == 0 ? 0 : 1;
mask = mask << 1;
}
return ans;
};
var hammingWeight = function (n) {
let ans = 0;
while (n != 0) {
ans++;
n = n & (n - 1);
}
return ans;
};
标签：rip image 位移 class pre mic UNC return 操作
原文地址：https://www.cnblogs.com/JosephWong/p/13720072.html
