Prefix notation is also known as...

MCQ

Prefix notation is also known as

Reverse Polish Notation

Reverse Notation

Polish Reverse Notation

Polish Notation

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MCQ

Making the push operation costly, select the code snippet which implements the same.(let q1 and q2 be two queues)

public void push(int x)
{
        if(empty())
        {
            q1.offer(x);
        }
        else{
                if(q1.size()>0)
                {
                    q2.offer(x);
                    int size = q1.size();
                    while(size>0)
                    {
                        q2.offer(q1.poll());
                        size--;
                    }
                }
            else if(q2.size()>0)
            {
                q1.offer(x);
                int size = q2.size();
                while(size>0)
                {
                    q1.offer(q2.poll());
                    size--;
                }
            }
        }
    }

public void push(int x)
{
        if(empty())
        {
            q1.offer(x);
        }
        else
        {
            if(q1.size()>0)
            {
                q1.offer(x);
                int size = q1.size();
                while(size>0)
                {
                    q2.offer(q1.poll());
                    size--;
                }
            }
            else if(q2.size()>0)
            {
                q2.offer(x);
                int size = q2.size();
                while(size>0)
                {
                    q1.offer(q2.poll());
                    size--;
                }
            }
        }
}

public void push(int x)
{
        if(empty())
        {
            q1.offer(x);
        }
        else
        {
            if(q1.size()>0)
            {
                q2.offer(x);
                int size = q1.size();
                while(size>0)
                {
                    q1.offer(q2.poll());
                    size--;
                }
            }
            else if(q2.size()>0)
            {
                q1.offer(x);
                int size = q2.size();
                while(size>0)
                {
                    q2.offer(q1.poll());
                    size--;
                }
            }
        }
}

public void push(int x)
{
        if(empty())
        {
            q1.offer(x);
        }
        else
        {
            if(q1.size()>0)
            {
                q2.offer(x);
                int size = q1.size();
                while(size>0)
                {
                    q2.offer(q2.poll());
                    size--;
                }
            }
            else if(q2.size()>0)
            {
                q1.offer(x);
                int size = q2.size();
                while(size>0)
                {
                    q2.offer(q1.poll());
                    size--;
                }
            }
        }
}

Discussion

MCQ

What is the result of the following operationTop (Push (S, X))

Null

None of the mentioned

Discussion

MCQ

space allocation for array is fixed and cannot be changed during run-time

user unable to give the input for stack operations

a runtime exception halts execution

all of the mentioned

Discussion

MCQ

Which of the following statement(s) about stack data structure is/are NOT correct?

Linked List are used for implementing Stacks

Top of the Stack always contain the new node

Stack is the FIFO data structure

Null link is present in the last node at the bottom of the stack

Discussion

MCQ

Which of the following types of expressions do not require precedence rules for evaluation?

fully parenthesised infix expression

postfix expression

partially parenthesised infix expression

more than one of the above

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More Data Structure Topics

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Abstract data types

Arrays

Lists

Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

Banking

Engineering

General

Medical

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forum Community Discussion

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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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Community Discussion

Similar Questions

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More Data Structure Topics