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MCQ

The result of evaluating the following postfix expression is5, 7, 9, *, +, 4, 9, 3, /, +, -

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MCQ

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() 
{
     return q1.isEmpty() & q2.isEmpty();
}

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MCQ

Consider the usual algorithm for determining whether a sequence of parentheses is balanced.
Suppose that you run the algorithm on a sequence that contains 2 left parentheses and 3 right parentheses (in some order).

The maximum number of parentheses that appear on the stack AT ANY ONE TIME during the computation?

4 or more

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MCQ

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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MCQ

Which data structure is needed to convert infix notation to postfix notation?

Branch

Queue

Tree

Stack

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MCQ

If memory for the run-time stack is only 150 cells(words), how big can N be in Factorial(N) before encounterring stack overflow?

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Abstract data types

Arrays

Lists

Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

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