LeetCode 455. Assign Cookies

class Solution {
public:
int findContentChildren(vector<int>& g, vector<int>& s) {
sort(g.begin(),g.end());
sort(s.begin(),s.end());
int i=g.size()-1, j=s.size()-1,count = 0;
while(i>=0 && j>=0)
{
if(g[i]>s[j]) i--;
else if(g[i--]<=s[j--]) count++;
}
return count;
}
};