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MCQ

What will be the postfix expression for following infix expression - A / B ^ C - D

A B / ^ C D -

A B ^ / C D -

A B C ^ / D -

A B C / ^ D -

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Evaluate Postfix expression from given infix expression.A + B * (C + D) / F + D * E

AB+CD*F/+D*E

ABCD+*F/+DE*+

ABCD+*/F+DE*

AB+CD*F/+DE*

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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;
}

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The data structure needed to convert a recursion to an iterative procedure is ............

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Abstract data types

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Stacks

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B Trees

Heaps

Hash based structures

Graphs

Mixed

Banking

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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

Report Error

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Report Error

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