Data Structures: Stack and Queue Implementations
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Questions and Answers

What is the basic feature of a stack?

  • It is a FIFO structure (First in First out).
  • It allows insertion and deletion at both ends.
  • It is an unordered list of different data types.
  • It is an ordered list of similar data type and follows LIFO structure (Last in First out). (correct)

    • What function is used to insert new elements into the stack?

  • insert()
  • push() (correct)
  • add()
  • put()

    • When is a stack said to be in Overflow state?

  • When it is completely full (correct)
  • When it has less elements than the defined capacity
  • When it is completely empty
  • When it has more elements than the defined capacity

    • What is the simplest application of a stack?

    <p>Reversing a word</p> Signup and view all the answers

    Which data structure uses LIFO (Last in First out) structure?

    <p>Stack</p> Signup and view all the answers

    What is the time complexity of the push operation in a stack implemented using an array?

    <p>O(1)</p> Signup and view all the answers

    Which application of a stack involves converting infix expressions to postfix expressions?

    <p>Infix to Postfix</p> Signup and view all the answers

    In a stack implemented using a linked list, what is the space complexity of the push operation?

    <p>O(1)</p> Signup and view all the answers

    What is the primary purpose of using a circular queue?

    <p>To efficiently implement buffering in data communication</p> Signup and view all the answers

    Which feature of a stack indicates that it is completely empty?

    <p>The top pointer is NULL</p> Signup and view all the answers

    Study Notes

    Stack Features and Functions

    • A stack is characterized by its Last In First Out (LIFO) principle, where the most recently added element is the first to be removed.
    • The push function is utilized to insert new elements into the stack.

    Stack States

    • A stack is said to be in an Overflow state when an attempt is made to add elements beyond its capacity.

    Applications of Stacks

    • A fundamental application of a stack is to evaluate expressions and manage function calls in programming languages.
    • Stack operations like converting infix expressions to postfix expressions highlight its role in expression handling.

    Data Structure Characteristics

    • The stack data structure inherently employs the LIFO concept for managing elements.

    Time and Space Complexity

    • The time complexity for a push operation in a stack implemented with an array is O(1).
    • In a stack implemented using a linked list, the space complexity of the push operation is also O(1).

    Circular Queue Purpose

    • The primary purpose of using a circular queue is to efficiently utilize memory by reusing empty spaces once elements are removed, preventing overflow situations in queue operations.

    Stack Indicators

    • The feature indicating that a stack is completely empty is typically called an "empty stack," often verified with a condition or a count that reaches zero.

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    Description

    Test your knowledge of data structures with a focus on the implementation of stacks and queues using arrays and linked lists. Explore applications such as infix to postfix conversion, evaluation of postfix expressions, balancing symbols, recursion, and more.

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