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  1. #include <cstring>
  2. class Item
  3. {
  4. private:
  5.     int id;
  6.     char name[32];
  7.  
  8. public:
  9.     Item(const int id = 0, const char *name = nullptr)
  10.     {
  11.         this->id = id;
  12.  
  13.         if(!name)
  14.             ::strcpy(this->name, "");
  15.         else
  16.             ::strcpy(this->name, name);
  17.     }
  18.  
  19.     const int getId() const
  20.     {
  21.         return id;
  22.     }
  23.  
  24.     const char* getName() const
  25.     {
  26.         return name;
  27.     }
  28.  
  29.     bool operator<(const Item another) const
  30.     {
  31.         return this->id < another.id;
  32.     }
  33.  
  34.     bool operator>(const Item another) const
  35.     {
  36.         return this->id > another.id;
  37.     }
  38. };
  39.  
  40. #include <cstdio>
  41. #include <vector>
  42. #include <algorithm>
  43.  
  44. using namespace std;
  45. typedef vector<Item> ItemVector;
  46.  
  47. int main(int argc, char **argv)
  48. {
  49.     ItemVector itemVector;
  50.  
  51.     itemVector.push_back(Item(2, "アイテム2"));
  52.     itemVector.push_back(Item(4, "アイテム4"));
  53.     itemVector.push_back(Item(1, "アイテム1"));
  54.     itemVector.push_back(Item(3, "アイテム3"));
  55.     itemVector.push_back(Item(0, "アイテム0"));
  56.  
  57.     stable_sort(itemVector.begin(), itemVector.end(), [](const Item& a, const Item& b) { return a < b; } );
  58.  
  59.     for(ItemVector::iterator iter = itemVector.begin();
  60.         iter != itemVector.end();
  61.         ++iter) {
  62.         printf("%d: %s\n", iter->getId(), iter->getName());
  63.     }
  64.  
  65.     return 0;
  66. }
Success #stdin #stdout 0s 2992KB
comments (?)
stdin
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Standard input is empty
stdout
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0: アイテム0
1: アイテム1
2: アイテム2
3: アイテム3
4: アイテム4
https://ideone.com/xzvz0G
language:
C++14 (gcc 8.3)
created:
13 years ago
visibility:
public

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