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  1. #include <iostream>
  2. #include <sstream>
  3. #include <string>
  4. #include <algorithm>
  5. #include <random>
  6.  
  7. using namespace std;
  8.  
  9. int fouriest_transform(int num)
  10. {
  11. 	static const char FOUR = '4';
  12.  
  13. 	string result = to_string(num);
  14. 	replace(result.begin(), result.end(), '0', FOUR);
  15. 	replace(result.begin(), result.end(), '1', FOUR);
  16. 	replace(result.begin(), result.end(), '2', FOUR);
  17. 	replace(result.begin(), result.end(), '3', FOUR);
  18. 	replace(result.begin(), result.end(), '4', FOUR);
  19. 	replace(result.begin(), result.end(), '5', FOUR);
  20. 	replace(result.begin(), result.end(), '6', FOUR);
  21. 	replace(result.begin(), result.end(), '7', FOUR);
  22. 	replace(result.begin(), result.end(), '8', FOUR);
  23. 	replace(result.begin(), result.end(), '9', FOUR);
  24.  
  25. 	return stoi(result);
  26. }
  27.  
  28. int main()
  29. {
  30. 	default_random_engine rng;
  31. 	uniform_int_distribution<int> distr(500, 999999999);
  32. 	int num;
  33.  
  34. 	cout << (num = distr(rng)) << " -> " << fouriest_transform(num) << endl;
  35. 	cout << (num = distr(rng)) << " -> " << fouriest_transform(num) << endl;
  36. 	cout << (num = distr(rng)) << " -> " << fouriest_transform(num) << endl;
  37. 	cout << (num = distr(rng)) << " -> " << fouriest_transform(num) << endl;
  38. 	cout << (num = distr(rng)) << " -> " << fouriest_transform(num) << endl;
  39.  
  40. 	return 0;
  41. }
  42.  
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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8903 -> 4
141238124 -> 4444
811325536 -> 444444444
492472328 -> 444444444
572054964 -> 444444444
https://ideone.com/iGkCRx
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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