LeetCode 455. Assign Cookies

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class Solution {
public:
int findContentChildren(vector<int>& g, vector<int>& s) {
sort(g.begin(), g.end());
sort(s.begin(), s.end());
int ans = 0, i = 0, j = 0;
while (i < g.size() && j < s.size()) {
if (s[j] >= g[i]) {
++i;
++ans;
}
++j;
}
return ans;
}
};