STL - 常用关联容器代码 - set & multiset

时间:2023-03-09 00:03:31
STL - 常用关联容器代码 - set & multiset

代码如下:

/*
5. set & multiset
*/ set<string> cities{
"Braunschweig", "Hanover", "Frankfurt", "New York",
"Chicago", "Toronto", "Paris", "Frankfurt"
};
multiset<string> dup_cities {
"Braunschweig", "Hanover", "Frankfurt", "New York",
"Chicago", "Toronto", "Paris", "Frankfurt"
};
cout << "cities before:" << endl;
ContainerUtil<set<string>>::printElements(cities);
ContainerUtil<multiset<string>>::printElements(dup_cities); cities.insert({ "London", "Munich", "Hanover", "Braunschweig" });
dup_cities.insert({ "London", "Munich", "Hanover", "Braunschweig" });
cout << "cities after:" << endl;
ContainerUtil<set<string>>::printElements(cities);
ContainerUtil<multiset<string>>::printElements(dup_cities);

运行结果:
cities before:
  Braunschweig  Chicago  Frankfurt  Hanover  New York  Paris  Toronto
  Braunschweig  Chicago  Frankfurt  Frankfurt  Hanover  New York  Paris  Toronto
cities after:
  Braunschweig  Chicago  Frankfurt  Hanover  London  Munich  New York  Paris  Toronto
  Braunschweig  Braunschweig  Chicago  Frankfurt  Frankfurt  Hanover  Hanover  London  Munich  New York  Paris  Toronto