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MCQ

The result of evaluating the postfix expression 5, 4, 6, +, *, 4, 9, 3, /, +, * is?

600

350

650

588

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MCQ

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

ABCD*+^

ABC+D*^

ABCD+*^

ABCD^*+

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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 Computer generally _________ expressions are preferred.

Postfix

Infix

Prefix

None of the above

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MCQ

Aposterior analysis are more accurate than apriori analysis because ?

it contains the real data.

it assumes all other factors to be dynamic.

it assumes all other factors to be constant.

it is a result of reverse-engineering.

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MCQ

Assume that the operators +,-, X are left associative and ^ is right associative.The order of precedence (from highest to lowest) is ^, X, +, -. The postfix expression for the infix expression a + b X c

abc X+ def ^^

abc X+ de^f^

ab+c Xd

-+aXbc^ ^def

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Stacks

Queues

Trees

Binary Trees

B Trees

Heaps

Hash based structures

Graphs

Mixed

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