multimap rbegin in C++ STL
multimap::rbegin() is a built-in-function in C++ STL which returns an iterator pointing to the last element of the container.
Syntax:
multimap_name.rbegiin()
Parameters: The function does not take any parameter.
Return Value: The function returns a reverse iterator pointing to the last element of the container.
(Note: Reverse iterators iterate backwards i.e when they are increased they move towards the beginning of the container)
The following two programs illustrates the function.
Program 1
// CPP program to illustrate// multimap::rbegin() #include <iostream>#include <map>using namespace std; int main(){ multimap<char, int> sample; // Insert pairs in the multimap sample.insert(make_pair('a', 10)); sample.insert(make_pair('b', 20)); sample.insert(make_pair('b', 30)); sample.insert(make_pair('c', 40)); sample.insert(make_pair('c', 50)); // Get the last element by // multimap::rbegin() cout << sample.rbegin()->first << " = " << sample.rbegin()->second;} |
Output
c = 50
Program 2
// CPP program to illustrate// multimap::rbegin() #include <iostream>#include <map>using namespace std; int main(){ multimap<char, int> sample; // Insert pairs in the multimap sample.insert(make_pair('a', 10)); sample.insert(make_pair('b', 20)); sample.insert(make_pair('b', 30)); sample.insert(make_pair('c', 40)); sample.insert(make_pair('c', 50)); // Show content of the multimap for (auto it = sample.rbegin(); it != sample.rend(); it++) cout << it->first << " = " << it->second << endl;} |
Output
c = 50 c = 40 b = 30 b = 20 a = 10
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