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Stack Applications II Starter Quiz

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Question 1

What is the value of the postfix expression 6 3 2 4 + – *:

Question 2

The equivalent infix expression and value for the postfix form 1 2 + 3 * 4 5 * – will be ___________

Question 3

What is the max size of the operand stack while evaluating the postfix exp 8 2 4 + - 2 7 1 / + * ?

Question 4

The result after evaluation the following postfix expression is _____.

7, 6, –, 1, 3, 2, *, 9, ↑, ↑, +, 8, +, 5, +

Question 5

Give the postfix expression for the following infix expression:

a*(b+c)/d-e↑f

Question 6

Which of the following permutation can be obtained in the same order using a stack assuming that input is the sequence 5, 6, 7, 8, 9 in that order?

Question 7

Convert the following Infix expression to Postfix form using a stack

x + y * z + (p * q + r) * s, follow usual precedence rule and assume that the expression is legal.

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Dec 21GATE & PSU CS