Data Structures Quiz

What is a queue data structure?

• A queue data structure is a linear data structure in which elements are added at one end called the rear and removed from the other end called the front.

• A queue data structure is a data structure that allows elements to be added and removed randomly.

• A queue data structure is a non-linear data structure.

• A queue data structure is a linear data structure in which elements are added at the front and removed from the rear.

What are the subtopics related to queue data structure?

• push, pop, peek, size, clear

• insert, delete, top, isFull, isQueueEmpty

• enqueue, dequeue, front, rear, isEmpty, isFull

• add, remove, peek, size, isEmpty

How can a queue be implemented using arrays?

• By using two pointers, one for the front and one for the rear of the queue, and fixed-size array to store the elements.

• By using a fixed-size array and a separate counter variable to keep track of the number of elements in the queue.

• By using a single pointer to keep track of the front of the queue and shifting the elements in the array when dequeuing.

• By using a resizable array and shifting the elements in the array when dequeuing.

How can a queue be implemented using linked list?

• By maintaining two pointers, front and rear, and adding new elements at the front end and removing from the rear end.

• By maintaining a single pointer and adding new elements at the front end and removing from the rear end.

• By maintaining two pointers, front and rear, and adding new elements at the front end and removing from the front end.

• By maintaining two pointers, front and rear, and adding new elements at the rear end and removing from the front end.

What is a stack data structure?

• A stack data structure is a data structure that allows random access to its elements.

• A stack data structure is a linear data structure that follows the Last-In-First-Out (LIFO) principle.

• A stack data structure is a non-linear data structure.

• A stack data structure is a linear data structure that follows the First-In-First-Out (FIFO) principle.

What are the subtopics related to stack data structure?

• recursion, iteration, branching

• implementation, operations, applications

• encryption, decryption, compression

• sorting, searching, hashing

How can a stack be implemented using arrays?

• By using the insert and delete operations on an array.

• By using the sort and search operations on an array.

• By using the enqueue and dequeue operations on an array.

• By using the push and pop operations on an array.

How can a stack be implemented using linked list?

• By using the tail of the linked list as the top of the stack and updating the tail pointer for push and pop operations.

• By using the head of the linked list as the top of the stack and updating the head pointer for push and pop operations.

• By using the middle node of the linked list as the top of the stack and updating the middle pointer for push and pop operations.

• By using a separate array to store the elements of the stack and updating the array for push and pop operations.

What is a singly linked list?

• A singly linked list is a data structure in which each node contains a value and a reference to the previous node in the list.

• A singly linked list is a data structure in which each node contains multiple values.

• A singly linked list is a data structure that can only store integers.

• A singly linked list is a data structure in which each node contains a value and a reference to the next node in the list.

How can a singly linked list be implemented?

• By using an array to store the elements of the list.

• By using a doubly linked list instead of a singly linked list.

• By creating a class or struct that represents a node in the list and using references to link the nodes together.

• By using a stack data structure to implement the list.