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MCQ

One can convert an infix expression to a postfix expression using a ..............

Stack

Queue

Deque

None of these

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If the elements

ABCD

DCBA

DCAB

ABDC

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Consider the usual algorithm for determining whether a sequence of parentheses is balanced. What is the maximum number of parentheses that will appear on the stack AT ANY ONE TIME when the algorithm analyzes: (()(())(()))

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MCQ

In a computer system, when an __________ expression in an infix notation needs to be evaluated, it is first converted into its postfix notation?

Algebraic

Arithmetic

Trigonometric

Geometric

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MCQ

An item that is read as input can be either pushed to a stack and later popped and printed, or printed directly. Which of the following will be the output if the input is the sequence of items 1, 2, 3

1, 5, 2, 3, 4

3, 4, 5, 2, 1

3, 4, 5, 1, 2

5, 4, 3, 1, 2

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MCQ

What is the functionality of the following piece of code?

public void display() 
{
	if(size == 0)
		System.out.println("underflow");
	else
	{
		Node current = first;
		while(current != null)
		{
			System.out.println(current.getEle());
			current = current.getNext();
		}
	}
}

reverse the list

display the list

display the list excluding top-of-the-stack-element

reverse the list excluding top-of-the-stack-element

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Binary Trees

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Heaps

Hash based structures

Graphs

Mixed

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