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  1. #include <iostream>
  2. #include <cassert>
  3. #include <vector>
  4. #include <string>
  5. using namespace std;
  6.  
  7. bool validate_extension_downgrade_error_message(std::vector<std::string> &args) {
  8.     if(args.size() != 2) {
  9.         return false;
  10.     }
  11.     int from[2] = {0, 0};
  12.     int to[2] = {0, 0};
  13.  
  14.     auto parser = [](std::string version, int result[2]) {
  15.     	auto dot_pos = version.find('.');
  16.     	if (dot_pos == std::string::npos) {
  17.     		result[0] = std::stoi(version);
  18.     	} else {
  19.     		result[0] = std::stoi(version.substr(0, dot_pos));
  20.     		assert(dot_pos < version.length() - 1);
  21.     		result[1] = std::stoi(version.substr(dot_pos + 1));
  22.     	}
  23.     	if (result[0] < 0 || result[1] < 0) {
  24.     		throw std::invalid_argument("Version cant be negative");
  25.     	}
  26.     };
  27.     try {
  28. 	    parser(args[0], from);
  29. 	    parser(args[1], to);
  30.     } catch (const std::invalid_argument &e) {
  31.     	return false;
  32.     }
  33.     // cout << from[0] << " " << from[1] << " " << " vs " << to[0] << " " << to[1] << endl;
  34.     return !std::lexicographical_compare(from, from + 2, to, to + 2);;
  35. }
  36.  
  37. int main() {
  38. 	std::vector<std::string> input;
  39. 	input = {"1.100", "1.96"};
  40. 	cout << validate_extension_downgrade_error_message(input) << endl;
  41. 	input = {"2", "1.96"};
  42. 	cout << validate_extension_downgrade_error_message(input) << endl;
  43. 	input = {"1.0", "1.96"};
  44. 	cout << validate_extension_downgrade_error_message(input) << endl;
  45. 	input = {"1.00", "-1.96"};
  46. 	cout << validate_extension_downgrade_error_message(input) << endl;
  47. 	input = {"1.0", "1.96", "2"};
  48. 	cout << validate_extension_downgrade_error_message(input) << endl;
  49. 	input = {"afsgaw", "idjwubqqdds"};
  50. 	cout << validate_extension_downgrade_error_message(input) << endl;
  51. 	return 0;
  52. }
Success #stdin #stdout 0.01s 5284KB
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https://ideone.com/qF2Kxv
language:
C++ (gcc 8.3)
created:
8 days ago
visibility:
public

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