# What are the associative containers Mcq?

They are set, multiset, map and multimap. 4.

## Which are the associative containers?

In computing, associative containers refer to a group of class templates in the standard library of the C++ programming language that implement ordered associative arrays. Being templates, they can be used to store arbitrary elements, such as integers or custom classes.

## How many associative containers are provided by C++ Mcq?

Explanation: C++ provides 4 types of Associative Containers namely Set, Map, multiset and multimap.

## How many types of associative containers are there?

The STL provides four associative containers: set, multiset, map and multimap.

## Is set an associative container?

A set is an Associative container which contains a sorted set of unique objects of type Key. Each element may occur only once, so duplicates are not allowed. There are four kind of Associative containers: set, multiset, map and multimap.

## How many associative containers are provided by C++?

Types of Sequence Containers

In the C++ Standard Library, there are four ordered associative containers and four unordered associative containers. The four ordered associative containers are multiset, set, multimap, and map.

## What is associative container explain any two associative containers with their functions?

In standard template libraries, they refer to the group of class templates used to implement associative arrays. They are used to store elements but have some constraints placed on their elements. There exists a key. In case of map and set, key is unique.

## Which of the following is unordered associative containers?

The four unordered associative containers are called unordered_set , unordered_multiset , unordered_map , and unordered_multimap .

## What are sequence containers derived containers and associative containers?

Sequence containers implement data structures that can be accessed sequentially. Associative containers implement sorted data structures that can be quickly searched (O(log n) complexity). Map: Collection of key-value pairs, sorted by keys, keys are unique (class template).

## What is meant by an associative array?

In computer science, an associative array, map, symbol table, or dictionary is an abstract data type that stores a collection of (key, value) pairs, such that each possible key appears at most once in the collection.

## What is the difference between map and multimap associative containers Mcq?

The map and the multimap are both containers that manage key/value pairs as single components. The essential difference between the two is that in a map the keys must be unique, while a multimap permits duplicate keys.

## Which are not full container classes in C++ Mcq?

6. Which are not full container classes in c++? Explanation: Container adaptors are not full container classes, but classes that provide a specific interface relying on an object of one of the container classes such as deque or list to handle the elements.

## What are C++ Mcq templates?

1) Template is a feature of C++ that allows us to write one code for different data types. 2) We can write one function that can be used for all data types including user defined types.

## What is a container in C++?

A container is an object that stores a collection of objects of a specific type. For example, if we need to store a list of names, we can use a vector . C++ STL provides different types of containers based on our requirements.

## What are iterators Mcq?

Explanation: Iterators are STL components used to point a memory address of a container. They are used to iterate over container classes.

## Do associative containers provide iterators?

In Simple Associative Containers, where the elements are the keys, the elements are completely immutable; the nested types iterator and const_iterator are therefore the same. Other types of associative containers, however, do have mutable elements, and do provide iterators through which elements can be modified.

## What are the three classes of containers?

The three types of containers found in the STL are sequential, associative and unordered.

## Which is example of derived container?

Derived containers:

The STL provides three derived containers namely, stack, queue, and priority_queue. These are also known as container adaptors. Stacks, queue and priority queue can easily be created from different sequence containers.

## What are the containers?

Containers are packages of software that contain all of the necessary elements to run in any environment. In this way, containers virtualize the operating system and run anywhere, from a private data center to the public cloud or even on a developer's personal laptop.

## What are associative unordered and ordered containers?

In the programming language C++, unordered associative containers are a group of class templates in the C++ Standard Library that implement hash table variants. Being templates, they can be used to store arbitrary elements, such as integers or custom classes.

## What are iterators used for?

An Iterator is an object that can be used to loop through collections, like ArrayList and HashSet. It is called an "iterator" because "iterating" is the technical term for looping.

## What does STL stand for C++?

STL stands for Standard Template Library.

## Is a map a container?

std::map is a sorted associative container that contains key-value pairs with unique keys. Keys are sorted by using the comparison function Compare . Search, removal, and insertion operations have logarithmic complexity. Maps are usually implemented as red-black trees.

## Which of the following types of access is provided by sequence containers?

In C++, sequence containers are a group of template classes used to store data elements. Because they are template classes, they can be used to store any data elements, including custom classes. The data structure they implement enables sequential access.

## Which of the following are the components of STL?

STL mainly consists of the following components which are mentioned below:
• #1) Containers. A container is a collection of objects of a particular type of data structure. ...
• #2) Algorithms. ...
• #3) Iterators. ...
• #1) Sequential Containers. ...
• #2) Associative Containers. ...