multimap

C + + Multimaps and maps are very similar, but multimaps allow duplicate elements. (Refer to map container for specific usage)List of functions:Begin () returns the iterator that points to the first elementClear () Delete all elementsCOUNT () returns the number of occurrences of an elementEmpty () returns true if Multimap is nullEnd () returns an iterator pointing to the end of the MultimapEqual_range () returns an iterator that points to the element'

/****************************************** ***** Basic descriptions of multimap multi- ing containers:**************************************** ****** Multimap multi- ing container: the data structure of the container is managed using a red/black tree.* All multimap elements are pair. The first element is a key and cannot be modified. The second element is a real

In the Use the In this article, we discuss the map associated container in the standard library. But that is only part of the map container. The standard library also defines a multimap container, which is similar to map, except that it allows duplicate keys. This attribute makes multimap more useful than expected: for example, a person with the same phone book can have more than two phone numbers, and mult

C + + Multimaps and maps are very similar, but multimaps allow duplicate elements. (Refer to map container for specific usage)List of functions:Begin () returns the iterator that points to the first elementClear () Delete all elementsCOUNT () returns the number of occurrences of an elementEmpty () returns true if Multimap is nullEnd () returns an iterator pointing to the end of the MultimapEqual_range () returns an iterator that points to the element'

In the article "using the // Note: pseudo codeMultimap Phonebook. insert ("Harry", "8225687"); // home phone numberPhonebook. insert ("Harry", "555123123"); // phone number of the organizationPhonebook. insert ("Harry", "2532532532"); // mobile phone numberThe ability to store duplicate keys in multimap greatly affects its interfaces and usage. So how do I create an associated container with a non-unique key? The answer is to use the

Document directory MAP/multimap Before using map/multimap, add the header file # include The internal data structures of MAP and multimap are also balanced binary trees. Map and multimap automatically sort elements based on the key of the element. to modify the key of an element, you must first Delete the elemen

# Include # Include # Include Using namespace STD;Int main (){String Xingming;String Shuming;Multimap While (CIN> Xingming> Shuming ){Mm. insert (make_pair (Xingming, Shuming ));Cin. Clear ();}String name;Cout Cin. Clear ();Cin> name;Multimap Int T = mm. Count (name ); For (INT I = 0; I! = T; ++ I, ++ ITER ){Cout }For (multimap Cout }Cout System ("pause ");Retur

Detailed map, Multimap, Unordered_map, unordered_multimapI believe that a lot of students and I just contact C + + STL, is deeply attracted by it. But trying to understand each template class is not an easy task. We should be on the vector, list, stack, queue and other classes to understand, so today detailed introduction of the next few very powerful but a little less understood class map, Multimap, Unorde

STD: map, STD: multimap, STD: tr1: unordered_map difference-laptop-blog channel-csdn. net STD: map, STD: multimap, STD: tr1: unordered_map difference Category: C/C ++ Read by 399 Comment (0) Favorites Report Treetable Both map and multimap are based on binary tree. The difference is: Only one key can exist in a map, while multip

The project needs to adopt a one-to-many mapping relationship, the original has not used Multimap, learning a bit, feeling more easily than imagined, a small example, demonstrating the use of multimap. #include #include using namespace Std; void Test_multimap (){Construct test data for MultimapMultimapExample.insert (Make_pair ("A"), String ("11"));Example.insert (Make_pair ("A"), String ("22"));Example.i

These two days, there is a task to use the C + + Multimap, so wrote a small demo /** * @File MultiMapDemo.cpp * * @Author: Bob * * @Create time:2016-12-1 11:57:06 * * @Last modify:bob * * @Last Mod Ify time:2016-12-1 11:57:06 * * @Description: * multimap multiple mapping container * multimap multiple mapping container: The data structure of the container is mana

Use map Multimap must contain header file map*:multimap1) Multimap definitionTemplateClass Multimp{.....typedef pair......};Multimap Each object is an object of the pair template class. The element first member variable is also called the keyword, and its type is key. The second member variable is also called a value, and the type is T. The elements in the