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MCQ

Pushing an element into stack already having five elements and stack size of 5 , then stack becomes

Overflow

Crash

Underflow

User flow

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MCQ

User perform following operations on stack of size 5 then -push(1);pop();push(2);push(3);pop();push(4);pop();pop();push(5);at the end of last operation, total number of elements present in the stack are -

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MCQ

What will be the postfix expression for following infix expression:b * c + d / e

b*cde/+

bcd*e/+

bc*de/+

bc*de+/

Discussion

MCQ

Select the code snippet which returns the top of the stack.

public int top()
{
       if(q1.size()>0)
       {
            return q1.poll();
       }
       else if(q2.size()>0)
       {
            return q2.poll();
       }
       return 0;
}

public int top()
{
       if(q1.size()==0)
       {
            return q1.peek();
       }
       else if(q2.size()==0)
       {
            return q2.peek();
       }
        return 0;
    }

public int top()
{
       if(q1.size()>0)
       {
            return q1.peek();
       }
       else if(q2.size()>0)
       {
            return q2.peek();
       }
       return 0;
}

public int top()
{
       if(q1.size()>0)
       {
            return q2.peek();
       }
       else if(q2.size()>0)
       {
            return q1.peek();
       }
       return 0;
}

Discussion

MCQ

Which of the following real world scenarios would you associate with a stack data structure?

piling up of chairs one above the other

people standing in a line to be serviced at a counter

offer services based on the priority of the customer

all of the mentioned

Discussion

MCQ

Stack can be implemented using ___________ and _________.

Array and Linked List

Queue and Graphs

Trees and Linked List

Array and Graphs

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Banking

Engineering

General

Medical

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Abstract data types

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Medical

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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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