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  1. #include <iostream>
  2. #include <vector>
  3. #include <string>
  4. #include <algorithm>
  5. #include <regex>
  6.  
  7. using namespace std;
  8.  
  9. bool myless(char l, char r) {
  10. 	return (int)l < (int)r;
  11. }
  12.  
  13.  
  14. int main()
  15. {
  16. 	string num1, num2;
  17. 	cin >> num1 >> num2;
  18.  
  19. 	auto pred = [](char ch){ return myless('0', ch) && !myless('9', ch); };
  20.  
  21. 	auto it1 = stable_partition(num1.begin(), num1.end(), pred);
  22. 	num1.erase(it1, num1.end());
  23. 	auto it2 = stable_partition(num2.begin(), num2.end(), pred);
  24. 	num2.erase(it2, num2.end());
  25.  
  26. 	cout << num1 << endl;
  27. 	cout << num2 << endl;
  28.  
  29.  
  30. //	if (!regex_match(num1, regex("[0-9]+")))
  31. //		cout << "invalid num" << endl;
  32. //	if (!regex_match(num2, regex("[0-9]+")))
  33. //		cout << "invalid num" << endl;
  34.  
  35. 	if (num1.size() < num2.size())
  36. 		cout << num1 + " is less than " + num2 << endl;
  37. 	else if(num1.size() > num2.size())
  38. 		cout << num1 + " is greater than " + num2 << endl;
  39. 	else
  40. 	{
  41. //		auto mypair = mismatch(num1.cbegin(), num1.cend(), num2.cbegin());
  42. //		if (mypair.first==num1.cend())
  43. //			cout << num1 + " is equal to " + num2 << endl;
  44. //		else if (myless(*mypair.first,*mypair.second))
  45. //			cout << num1 + " is less than " + num2 << endl;
  46. //		else /*if (myless(*mypair.second, *mypair.first))*/
  47. //			cout << num1 + " is greater than " + num2 << endl;
  48. 		if(num1<num2)
  49. 			cout << num1 + " is less than " + num2 << endl;
  50. 		else if(num1>num2)
  51. 			cout << num1 + " is greater than " + num2 << endl;
  52. 		else
  53. 			cout << num1 + " is equal to " + num2 << endl;
  54. 	}
  55. }
Success #stdin #stdout 0s 3436KB
comments (?)
stdin 
123457
123456
stdout 
123457
123456
123457 is greater than 123456
https://ideone.com/8QmAGs
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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