STL container classes: An object which holds a collection of values or other objects is termed as container. There are two types of container class: sequence associative Associative container: Associative container is the process of storing the data in a non-sequential order in memory. Example of associative container: set map multiset multimap unordered_map Set: A “set” belongs to an associative container which holds a group of unique values. STL class template can be used to implement a “set” container. Only unique elements should be stored in the “set”. It should not have the same value for two elements. The elements present in the “set” are automatically sorted in ascending order. In order to use “set” class, the header file “#include<set>” should be included in the program.

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Chapter 17, Problem 7RQE

Program Plan Intro

STL container classes:

An object which holds a collection of values or other objects is termed as container.

There are two types of container class:

sequence

associative

Associative container:

Associative container is the process of storing the data in a non-sequential order in memory.

Example of associative container:

set

map

multiset

multimap

unordered_map

Set:

A “set” belongs to an associative container which holds a group of unique values. STL class template can be used to implement a “set” container.

Only unique elements should be stored in the “set”. It should not have the same value for two elements.

The elements present in the “set” are automatically sorted in ascending order.

In order to use “set” class, the header file “#include<set>” should be included in the program.

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