CS Data Structure Quiz

A collection in Java is a group of objects which are represented as a single unit.

• True

• False

• Maybe

• Ok

What does the collection framework in Java hold?

• All the collection classes and interfaces

• Only the collection classes

• Only the collection interfaces

• None of the above

What is the key difference between an array and a collection in Java?

• Arrays are dynamic, collections are fixed

• Arrays are fixed-size, collections are dynamic

• There is no difference

• Arrays and collections are the same thing

What is the advantage of an array over a collection?

• Arrays can grow or shrink dynamically

• Arrays have a fixed size and provide direct access to elements using an index

• Arrays can only store objects

• Arrays can only store primitive types

What is the advantage of a collection over an array?

• Collections have a fixed size

• Collections can only store objects

• Collections can grow or shrink dynamically

• Collections can only store primitive types

Which method adds an element to the collection?

• add(E element)

• remove(Object o)

• clear()

• size()

What does the method 'isEmpty()' do?

• Adds an element to the collection

• Removes an element from the collection

• Returns the number of elements in the collection

• Returns true if the collection contains no elements

What is an Abstract Data Type (ADT)?

• A high-level description of a collection of data and the operations that can be performed on that data

• A specific implementation of a data structure

• A type of array in Java

• A type of collection in Java

What's the difference between a List ADT and a List Interface?

• List ADT is a high-level description of data and operations, while the List Interface has specific method signatures

• List ADT and List Interface are the same thing

• List ADT is a specific implementation of a data structure, while the List Interface is a high-level description

• There is no difference

What's the difference between Array, ArrayList, and LinkedList?

• Arrays are dynamic, ArrayLists are fixed-size, LinkedLists can grow or shrink

• Arrays are fixed-size, ArrayLists are dynamic, LinkedLists have a constant time complexity for adding or removing elements

• Arrays, ArrayLists, and LinkedLists are all the same

• Arrays, ArrayLists, and LinkedLists are all different types of collections