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  1. #include <iostream>
  2. #include <vector>
  3. #include <unordered_set>
  4. #include <string>
  5. #include <algorithm>
  6.  
  7. std::vector<std::string> removeDupWordUnique(std::vector<std::string> strings) //O(n*log(n))
  8. {
  9.     std::sort(strings.begin(), strings.end());
  10.     auto end = std::unique(strings.begin(), strings.end());
  11.     strings.erase(end, strings.end());
  12.     return strings;
  13. }
  14.  
  15. std::vector<std::string> removeDupWordUnorderedSet(const std::vector<std::string>& strings) //O(n)
  16. {
  17.     std::unordered_set<std::string> unique(strings.begin(), strings.end());
  18.     return std::vector<std::string>(unique.begin(), unique.end());
  19. }
  20.  
  21.  
  22. int main() {
  23. 	std::vector<std::string> duplicated = {"car", "plane", "bicycle", "car", "boat", "bike", "plane", "ship", "boat"};
  24. 	std::vector<std::string> cleared_by_unique = removeDupWordUnique(duplicated);
  25. 	std::vector<std::string> cleared_by_hashset = removeDupWordUnorderedSet(duplicated);
  26. 	std::cout<<"Original set: ";
  27. 	for(auto& i: duplicated)
  28. 		std::cout<<i<<", ";
  29. 	std::cout<<"\n";
  30. 	std::cout<<"Unique: ";
  31. 	for(auto& i: cleared_by_unique)
  32. 		std::cout<<i<<", ";
  33. 	std::cout<<"\n";
  34. 	std::cout<<"After hashset: ";
  35. 	for(auto& i: cleared_by_hashset)
  36. 		std::cout<<i<<", ";
  37. 	std::cout<<"\n";
  38. 	return 0;
  39. }
Success #stdin #stdout 0.01s 5296KB
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stdin
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Standard input is empty
stdout
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Original set: car, plane, bicycle, car, boat, bike, plane, ship, boat, 
Unique: bicycle, bike, boat, car, plane, ship, 
After hashset: ship, boat, bicycle, bike, plane, car,
https://ideone.com/VIn0Ha
language:
C++14 (gcc 8.3)
created:
86 days ago
visibility:
secret

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