CPP

How to use iterators in C++ vector?

An iterator is used to move through the elements of a C++ Standard Library container (vector, set, map etc.). It is analogous to array indexes or pointers. This pointer-like object that can be incremented or decremented, de-referenced (using *), and compared against another iterator. Vector iterators are random-access iterators, meaning, they can be used to …

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multimap::size() method in C++ STL

Multimaps are associative containers available in the C++ Standard Library. They are similar to a map with an addition that multiple elements can have the same keys. The multimap::size() is a method available in the STL that returns the number of elements present in the multimap. Syntax: Parameters: The multimap::size() does not accept any parameter:Return …

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multiset::insert() method in C++ STL

Multisets are associative containers available in the C++ Standard Library. They are similar to sets with an addition that multiple keys with equivalent values are allowed. The multiset::insert() is a method available in the STL that extends the container by inserting new elements, effectively increasing the container size by the number of elements inserted. Syntax: …

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