Stack and Queue Concepts Quiz

In which of the following scenarios would a stack NOT be appropriate?

• Tracking website navigation history.

• Maintaining a task priority list where high-priority tasks are handled first.

• Performing undo operations in a text editor.

• Evaluating a mathematical expression.

When simulating a stack with a Deque in Java, which method should be used to remove the last element added?

• addFirst()

• removeLast()

• removeFirst()

• pollLast()

Which of the following best describes a stack?

• A Last-In-First-Out (LIFO) data structure

• A First-In-First-Out (FIFO) data structure

• A data structure where elements are randomly accessed

• A type of queue

In Java, which class is commonly used to represent a stack?

• Stack

• Map

• Queue

• List

What is the operation called that adds an element to the top of a stack?

• Push

• Pop

• Peek

• Enqueue

Which operation removes the top element of a stack?

• Pop

• Peek

• Insert

• Add

In the context of stacks, what does LIFO stand for?

• Last-In-First-Out

• First-In-First-Out

• Last-In-Last-Out

• First-In-Last-Out

Which of these is an example of using a stack for syntax checking?

• Matching parentheses in code

• Counting words in a document

• Filtering search results

• Calculating averages

How is a stack used in expression evaluation?

• To evaluate operators from left to right

• To store operators and operands in reverse order

• To manage operator precedence

• To count the number of operands

If you want to check the element on the top of a stack without removing it, which operation should you use?

• Pop

• Peek

• Push

• Remove