multiset<int>MULTI_SET;//自动排序不去重不加比较类(greater<int>)默认是从小到大排序 unordered_set<int>UNORDERED_SET;//不自动排序但去重 unordered_multiset<int>UNORDERED_MULTISET;//无序不去重集合 //map的相关系列进行类比即可 map<string,int>MAP; multimap<string,int>MULTI_MAP; unordered_map<string,...
set<int>::iterator box_start = box.begin();//指向第一个元素的地址,box.rend()指向第一个元素的前一个地址set<int>::iterator box_end = box.end();//指向最后一个元素的下一个地址,box.rbegin()指向最后一个元素for(inti =0; i <10; i++) { box.emplace(i);//插入一个元素 0,1,2,3,...
using namespace std; int main() { unordered_multiset<string> my_set; my_set.insert("apple"); my_set.insert("banana"); my_set.insert("orange"); return 0; } 删除元素 #include <unordered_set> #include <string> using namespace std; int main() { unordered_multiset<string> my_set; m...
完整代码: #include<iostream>#include<string>#include<unordered_set>usingnamespacestd;classPerson{public:Person(string name,intage):name(name),age(age){};stringgetName()const;intageAge()const;private:string name;intage;};stringPerson::getName()constreturnthis->name;intPerson::getAge()constreturn...
// std_tr1__unordered_set__unordered_multiset_construct.cpp // compile with: /EHsc #include <unordered_set> #include <iostream> typedef std::unordered_multiset<char> Myset; int main() { Myset c1; c1.insert('a'); c1.insert('b'); c1.insert('c'); // display contents " [c] ...
(none) Return value trueif the container is empty,falseotherwise. Complexity Constant. Example The following code usesemptyto check if astd::unordered_multiset<int>contains any elements: Run this code #include <iostream>#include <unordered_set>intmain(){std::unordered_multiset<int>numbers;std::...
Return value The number of elements in the container. Complexity Constant. Example The following code usessizeto display the number of elements in astd::unordered_multiset<int>: Run this code #include <iostream>#include <unordered_set>intmain(){std::unordered_multiset<int>nums{1,3,5,7};std...
pair<string,int> process(vector<string> &v); int main(int argc, char const *argv[]) { /*** *使用关联容器(map、set)。 ***/ map<string,size_t> word_count;//空map,关键字是string,值是size_t类型。 set<string> exclude = {"the","but"};//用set保存想忽略的单词。
// std_tr1__unordered_set__unordered_multiset_size_type.cpp // compile with: /EHsc #include <unordered_set> #include <iostream> typedef std::unordered_multiset<char> Myset; int main() { Myset c1; Myset::size_type sz = c1.size(); std::cout << "size == " << sz << std::...
// std_tr1__unordered_set__unordered_multiset_reference.cpp // compile with: /EHsc #include <unordered_set> #include <iostream> typedef std::unordered_multiset<char> Myset; int main() { Myset c1; c1.insert('a'); c1.insert('b'); c1.insert('c'); // display contents " [c] ...