fisher e2 80 93yates shuffle algorithm c 2b 2b

1default_random_engine seed;
2vector<int> shuffle(vector<int>arr) {
3        
4        for(int i =arr.size()-1 ;i>0;i--)
5        {       
6                int indx =  uniform_int_distribution<int>(0, i)(seed);
7                swap(arr[i],arr[indx]);
8                
9        }
10        return arr;
11    }
12