Question Discussion & Solution

MCQ

The type of expression in which operator succeeds its operands is?

Infix Expression

Prefix Expression

Postfix Expression

None of the mentioned

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Which of the following is an application of stack?

finding factorial

tower of Hanoi

infix to postfix conversion

all of the above

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Process of removing an element from stack is called __________

Create

Push

Evaluation

Pop

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

Null

None of the mentioned

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Stack is useful for implemeting

recursion

depth first search

both (a) and (b)

breadth first search

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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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Binary Trees

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Heaps

Hash based structures

Graphs

Mixed

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