unordered_map< pair<int,int>,int, hashfunc > mp; 我们自己手动做一个hash就可以继续使用unordered_map了。 同理,vector也可以如此: 1structvector_hash {2template <typename T>3size_toperator()(constT & p)const{4hash<int>hasher;5size_t seed =0;6for(inti : p) {7seed ^=hasher(i);8//...
代码 class Solution { public: string frequencySort(string s) { //使用哈希表 unordered_map<char,int>mp; int length=s.length(); for(auto &ch : s){ mp[ch]++; //按照哈希表的key对其++ } //定义容器,全部加到尾部 vector< pair<char,int> > vec; for(auto &it : mp){ vec.emplace_bac...
在声明tr1::unordered_map<Pair,bool> h;之前，必须使用Key = std::pair<int, int>专门化std::...
a) int a;表示一个内存空间，这个空间用来存放一个整数（int）； b) int* a;表示一个内存空间，这...
myrecipe.insert(std::make_pair<std::string,double>("eggs",6.0));// move insertionmyrecipe.insert(mypantry.begin(),mypantry.end());// range insertion erase Erase elements (public member function ) // erase examples:mymap.erase(mymap.begin());// erasing by iteratormymap.erase("France"...
operator==operator!= (C++11)(C++11)(until C++20) std::swap(std::unordered_map) (C++11) erase_if(std::unordered_map) (C++20) Deduction guides(C++17) T&operator[](constKey&key); (1)(since C++11) T&operator[](Key&&key);
map<string,int> nmap; nmap["LiMin"] = 90; nmap["ZiLinMi"] = 79; nmap["BoB"] = 92; nmap.insert(make_pair("Bing",99)); nmap.insert(make_pair("Albert",86)); //把map中元素转存到vector中 vector<PAIR> vec(nmap.begin(),nmap.end()); ...
value_typepair<constkey_type,mapped_type> referencevalue_type& const_referenceconstvalue_type& difference_typeptrdiff_t size_typesize_t pointerallocator_traits<Alloc>::pointer iteratorA forward iterator for the value_type value_type local_iteratorA forward iterator for the value_type ...
intmain(intargc,char** argv){log.execname (basename (argv[0]));log<<"starting"<<endl;vector<string> args (&argv[1], &argv[argc]);//Print a usage error if the there are too many input commandsif(args.size() >2) usage();//Otherwise get the host and port from daemonstringhost...
1 unordered_map<int,int> mp;2//插⼊ 3 mp.insert({1,0});//数组插⼊ 4 mp[1] = 0;//键值插⼊ 5 mp.insert(mp2.begin(),mp2.end());//插⼊另⼀个哈希表中的元素 6 mp.insert(pair<int,int>(0,1));7 8//删除 9 mp.erase(mymap.begin());10 mp.erase(1);11 mp....