sort arrayby increasing order.cpp

class Solution {
public:
using int2=array<int,2>;
    vector<int> frequencySort(vector<int>& nums) {
        int n=nums.size(),freq[201]={0};
         for(int x:nums){
            freq[x+100]++;
        }
        
        sort(nums.begin(), nums.end(), [&](int x, int y){
            return (freq[x+100]==freq[y+100])?x>y:freq[x+100]<freq[y+100];
        });
        return nums;
    }
};