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
