leetcode 274. H 指数

c++

class Solution {
public:
    int hIndex(vector<int>& citations) {
        sort(citations.begin(), citations.end());
        int h = 1, n = citations.size();
        while (h <= citations.size() && citations[--n] >= h) h++;
        return h - 1;
    }
};

js

var hIndex = function(citations) {
    citations.sort((a, b) => a - b);
    var h = 1, n = citations.length;
    while (h <= n && citations[n - h] >= h) h++;
    return h - 1;
};