Question Discussion & Solution

MCQ

What would be the asymptotic time complexity to find an element in the linked list?

O(1)

O(n)

O(n^2)

None of the mentioned

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MCQ

A linear collection of data element given by mean of pointer is called ______________.

Linked List

Queue

Stack

Graph

Discussion

MCQ

Can we read a data item at any location of a list within a constant time (i.e. O(1))?

Yes

Yes, only if the list is implemented by pointers (i.e. linked-list)

Yes, only if the list is implemented by an array

No, we need O(n) computation steps no matter what kind of implementation is used

Discussion

MCQ

What is a memory efficient double linked list?

Each node has only one pointer to traverse the list back and forth

The list has breakpoints for faster traversal

An auxiliary singly linked list acts as a helper list to traverse through the doubly linked list

None of the mentioned

Discussion

MCQ

What would be the asymptotic time complexity to add a node at the end of singly linked list, if the pointer is initially pointing to the head of the list?

O(1)

O(n)

? (n)

? (1)

Discussion

MCQ

Consider the following definition in c programming language.

struct node
{
int data;
struct node * next;
}
typedef struct node NODE;
NODE *ptr;

Which of the following c code is used to create new node?

ptr = (NODE*)malloc(sizeof(NODE));

ptr = (NODE*)malloc(NODE);

ptr = (NODE*)malloc(sizeof(NODE*));

ptr = (NODE)malloc(sizeof(NODE));

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Data Structure Basics

Abstract data types

Arrays

Lists

Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

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