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MCQ

The process of accessing data stored in a serial access memory is similar to manipulating data on a ________

Heap

Binary Tree

Array

Stack

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MCQ

Stack is used for

CPU Resource Allocation

Breadth First Traversal

Recursion

None of the above

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MCQ

In eveluating the arithmetic expression 2*3-(4+5),using stacks to evaluate its equivalent postfix form, which of the following stack configuration is not possible?

4 6

9 6

5 4 2006

9 3 2002

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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

In conversion from prefix to postfix using stack data-structure, if operators and operands are pushed and popped exactly once, then the run-time complexity is ............

?(1)

?(n)

?(log n)

?(n^2)

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MCQ

Consider Stack is implemented using the array. What will be the initial value with which top is initialized.

-1

Garbage

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