Given below is the Node class to perform basic list operatio...

MCQ

Given below is the Node class to perform basic list operations and a Stack class with a no arg constructor. Select from the options the appropriate push() operation that can be included in the Stack class. Also

public void push(Object item)
{
	Node temp = new Node(item,first);
	first = temp;
	size++;
}

public void push(Object item)
{
	Node temp = new Node(item,first);
	first = temp.getNext();
	size++;
}

public void push(Object item)
{
	Node temp = new Node();
	first = temp.getNext();
	first.setItem(item);
	size++;
}

public void push(Object item)
{
	Node temp = new Node();
	first = temp.getNext.getNext();
	first.setItem(item);
	size++;
}

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User perform following operations on stack of size 5 then -push(1);pop();push(2);push(3);pop();push(2);pop();pop();push(4);pop();pop();push(5);Which of the following is correct statement for stack ?

Stack Operations will be performed Smoothly

Underflow Occures

Overflow Occures

None of these

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What is the time complexity of pop() operation when the stack is implemented using an array?

O(1)

O(n)

O(logn)

O(nlogn)

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Select the code snippet which return true if the stack is empty, false otherwise.

public boolean empty()
{
     return q2.isEmpty();
}

public boolean empty() 
{
     return q1.isEmpty() || q2.isEmpty();
}

public boolean empty() 
{
     return q1.isEmpty();
}

public boolean empty() 
{
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}

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Convert the following infix expression to postfix expression -B * C - C + D / A / ( E + E )

B C * C - D A / E E + / +

B C C * - D A / E E + / +

B C C - * D A / E E + / +

B C C - * D / A E E + / +

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MCQ

What does

accessing item from an undefined stack

adding items to a full stack

removing items from an empty stack

index out of bounds exception

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category More Data Structure Topics

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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