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  1. #include <iostream>
  2. #include <string>
  3. #include <tuple>
  4. #include <list>
  5. #include <set>
  6. class Example
  7. {
  8.     std::string one, two, three, four, five;
  9. public:
  10.     Example(const std::string& a_one, const std::string& a_two,
  11.             const std::string& a_three,
  12.             const std::string& a_four, const std::string& a_five) :
  13.         one(a_one),two(a_two),three(a_three),four(a_four),five(a_five)
  14.         {}
  15.     bool operator < (const Example& other) const
  16.     {
  17.         return std::tie(one, two, three, four, five)
  18.              < std::tie(other.one, other.two, other.three, other.four,
  19.                         other.five);
  20.     }
  21.     friend std::ostream& operator<<(std::ostream& os, const Example& e) {
  22.         return os << "[" << e.one << "," << e.two << "," << e.three << "," << e.four << "," << e.five << "]";
  23.     }
  24. };
  25.  
  26.  
  27. std::list<Example> GetExamples()
  28. {
  29.     std::list<Example> result;
  30.     result.push_back(Example("duplicate", "a", "a", "a", "a"));
  31.     result.push_back(Example("unique", "2", "4", "0", "0"));
  32.     result.push_back(Example("duplicate", "a", "a", "a", "a"));
  33.     result.push_back(Example("unique", "2", "3", "4", "5"));
  34.     return result;
  35. }
  36. void CountExample(const Example& example, std::multiset<Example>& counters)
  37. {
  38.     counters.insert(example);
  39. }
  40.  
  41. void PrintCounters(const std::multiset<Example>& counters)
  42. {
  43.     for(auto i=counters.begin(); i!=counters.end(); i = counters.upper_bound(*i))
  44.             std::cout << *i << ":" << counters.count(*i) << '\n';
  45. }
  46.  
  47. int main()
  48. {
  49.     std::multiset<Example> counters;
  50.     std::list<Example> examples = GetExamples();
  51.     std::list<Example>::const_iterator Iter;
  52.     for (Iter = examples.begin(); Iter != examples.end();Iter++)
  53.     {
  54.         CountExample(*Iter, counters);
  55.     }
  56.     PrintCounters(counters);
  57. }
  58.  
Success #stdin #stdout 0s 2976KB
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stdin
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Standard input is empty
stdout
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[duplicate,a,a,a,a]:2
[unique,2,3,4,5]:1
[unique,2,4,0,0]:1
https://ideone.com/uA7ao
language:
C++14 (gcc 8.3)
created:
14 years ago
visibility:
public

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