Crowdly

The

first element added to the stack will be the first one to be removed

It is a FIFO data structure

The

last element added to the stack will be the first one to be removed

What is true about Queue?

The

last element added to the queue will be the first one to be removed

It is a LIFO data structure

It is a FIFO data structure

Can be used to process messages as they appear or serve customers as they come

The

first element added to the queue will be the first one to be removed

What will be a result of executing the following code?

What is true about Dictionary?

This is a list of zero or more elements can be returned using the same key

It can be found under System.Collections.Generic namespace

It`s a strongly typed list of objects that can be accessed by index

Dictionary stores objects that represent a key-value pair.

In Dictionary each key is associated with one value

What will be a result of executing the following code?

What will be a result of executing the following code?

What is true about ArrayList?

ArrayList represents a collection of objects. And it is possible if necessary to save together various objects - lines, numbers, etc.

It can be found under System.Collections.Generic namespace

It can be found under System.Collections namespace

ArrayList is

a strongly

typed

list

objects

Generic collections from System.Collections.Generic are more flexible and safe, and are the preferred way to work with data.

True

False

IEnumerator is an interface which helps to get current elements from the collection, it has the following two methods

Sets the enumerator to its initial position, which is before the first element in the collection.

Sets the enumerator to the next element of the collection; it Returns true if the enumerator was successfully set to the next element and false if the enumerator has reached the end of the collection.