Question Discussion & Solution

MCQ

The linked representation of a binary tree is implemented by using a linked list having an_________.

Info part

Two pointers- left and right

Both (a) and (b)

One pointer

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MCQ

A binary tree can easily be converted into q 2-tree

by replacing each empty sub tree by a new internal node

by inserting an internal nodes for non-empty node

by inserting an external nodes for non-empty node

by replacing each empty sub tree by a new external node

Discussion

MCQ

A full binary tree with n leaves contains

n nodes

log n 2 nodes

2 nodes

Discussion

MCQ

A full binary tree with n non-leaf nodes contains

2n nodes

n - 1 nodes

log2n nodes

2n + 1 nodes

Discussion

MCQ

What is wrong with below code for inorder traversal of inorder threaded binary tree:

inordertraversal(threadedtreenode root):
   threadedtreenode q = inorderpredecessor(root)
   while(q!=root):
   q=inorderpredecessor(q)
   print q.data

inordersuccessor instead of inorderpredecessor must be done

code is correct

it is code for post order

it is code for pre order

Discussion

MCQ

Why we prefer threaded binary trees?

storage required by stack and queue is more

pointers in most of nodes of a binary tree are NULL

difficult to find a successor node

all of the mentioned

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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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