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  1. #include <bits/stdc++.h>
  2. #define faster() ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  3. using namespace std;
  4. typedef long long ll;
  5. typedef unsigned long long ull;
  6. typedef unsigned int uint;
  7.  
  8. void solve()
  9. {
  10. 	int key,max,k,d=0,i=0;
  11. 	string s;
  12. 	cin >> k;
  13. 	cin >> s;
  14. 	while (d<k && i<s.size())
  15. 	{
  16. 		max=-1;
  17. 		for (int j=s.size()-1; j>i; j--)
  18. 		{
  19. 			if (s[j]-48>max)
  20. 			{
  21. 				max=s[j]-48;
  22. 				key=j;
  23. 			}
  24. 		}
  25. 		if (max>s[i]-48)
  26. 		{
  27. 			swap(s[i],s[key]);
  28. 			d++;
  29. 		}
  30. 		i++;
  31. 	}
  32. 	cout << s << endl;
  33. }
  34. int main()
  35. {
  36. 	faster();
  37. 	int t;
  38. 	cin >> t;
  39. 	while (t--)
  40. 	{
  41. 		solve();
  42. 	}
  43.  
  44. 	return 0;
  45. }
  46.  
  47.  
Success #stdin #stdout 0.04s 4416KB
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https://ideone.com/mW1h9I
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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