Data Structures: Stacks Quiz
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Questions and Answers

What characteristic defines a stack as an Abstract Data Type (ADT)?

  • It follows a Last In First Out (LIFO) order. (correct)
  • It allows random access to elements.
  • It can expand dynamically without limits.
  • It can only store integers.

    • In which programming context is a stack most commonly used?

  • To maintain a sorted list of elements.
  • To implement a priority queue.
  • To manage multithreading and concurrent processes.
  • For backtracking algorithms like depth-first search. (correct)

    • Which operation is NOT typically associated with stack data structure?

  • Enqueue (correct)
  • Peek
  • Push
  • Pop

    • What is the primary advantage of using a stack in programming?

    <p>It promotes a clear way of handling function calls and returns.</p> Signup and view all the answers

    What does it mean for a stack to behave like a real-world stack?

    <p>Items are added or removed from the top.</p> Signup and view all the answers

    Study Notes

    Overview of Stacks

    • A stack is an Abstract Data Type (ADT) widely implemented across various programming languages.
    • The name "stack" is derived from its resemblance to a physical stack, where items are added or removed in a specific order.

    Characteristics of Stacks

    • LIFO Principle: Stacks follow a Last In, First Out (LIFO) structure, meaning the last item added is the first to be removed.
    • Basic Operations: Major operations associated with stacks include:
      • Push: Adding an item to the top of the stack.
      • Pop: Removing the item from the top of the stack.
      • Peek/Top: Viewing the item at the top without removing it.

    Applications of Stacks

    • Commonly used for managing function calls in programming through call stacks.
    • Facilitate undo mechanisms in software applications.
    • Used in algorithm implementations such as depth-first search and expression evaluation.

    Real-World Analogy

    • Similar to stacking plates or books, where the last one placed on top is the first one that can be taken off, reinforcing the LIFO nature of stacks.

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    Description

    Test your knowledge of stacks as an Abstract Data Type (ADT) in programming languages. This quiz will cover the fundamental concepts and operations related to stacks. Perfect for students learning data structures and algorithms!

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