Virtual Labs

1. What does push operation on a stack do?

a: Adds an element to the bottom of the stack. Explanation

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b: Adds an element to the top of the stack. Explanation

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c: Removes an element from the top of the stack. Explanation

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d: Adds an element in the middle of the stack. Explanation

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2. Situation: A teacher wants to remember the names of all students in the class. Which of the following is the best possible way to use the linked list in this situation?

a: Teacher memorizes all students' names. Explanation

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b: Teacher asks her favorite student to memorize all others names and help her whenever needed. Explanation

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c: Teacher asks each student to remember the person sitting next to him/her and the teacher will only have to remember the first person's name. Explanation

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d: Teacher asks all students to memorize every other student's name. Explanation

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3. Situation: A teacher wants to remember the names of all students in the class. In the aforementioned question, what are the pros and cons of using a linked list faced by the teacher?

a: It minimizes her effort. Explanation

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b: To access a student's name it will take a lot of time. Explanation

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c: Both a and b Explanation

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d: None of these Explanation

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4. Which of the following best describes a stack?

a: People standing at Starbucks. Explanation

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b: A family tree Explanation

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c: A football team Explanation

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d: Set of dinner plates placed on top of each other Explanation

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5. On what principle are objects inserted and removed in stacks?

a: LIFO Explanation

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b: FIFO Explanation

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c: LILO Explanation

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d: None of These Explanation

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Infix and Postfix