11. Sort 0s, 1s and 2s

//{ Driver Code Starts
#include <bits/stdc++.h>
using namespace std;


// } Driver Code Ends
class Solution {
  public:
    void sort012(vector<int>& a) {
        // code here
        sort(a.begin(), a.end());
    }
};

//{ Driver Code Starts.
int main() {

    int t;
    cin >> t;
    cin.ignore();
    while (t--) {

        vector<int> a;
        string input;
        int num;

        getline(cin, input);
        stringstream s2(input);
        while (s2 >> num) {
            a.push_back(num);
        }
        Solution ob;
        ob.sort012(a);

        int n = a.size();
        for (int i = 0; i < n; i++) {
            cout << a[i] << " ";
        }

        cout << endl;
        cout << "~" << endl;
    }
    return 0;
}

// } Driver Code Ends
=========================================================================
void sortArray(vector<int> nums) {
      int left= 0, mid = 0, right= nums.size()-1;
      while (mid <= right) {
          if (nums[mid] == 0) {
              swap(nums[mid], nums[left]);
              left++;
              mid++;
          }
          else if (nums[mid] == 1) {
              mid++;
          }
          else if (nums[mid] == 2) {
              swap(nums[mid], nums[right]);
              right--;
          }
      }
  }