CSC 1061 Data Structures: Bag (Static Array)
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Questions and Answers

What must be done before adding an item to a fixed size array?

  • Ensure the data type of the item matches the array. (correct)
  • Check if the current size is less than MAX_SIZE. (correct)
  • Initialize the array to zero before adding.
  • Set the index of the new item as the current size.
  • Which statement about the 'size' member in a bag data structure is correct?

  • Size should be initialized to 1 when the data structure is created.
  • Size is used to track the number of elements currently stored. (correct)
  • Size must be set to a fixed value identical to MAX_SIZE.
  • Size can be increased or decreased at any time without restrictions.
  • What is the purpose of the 'removeItem' function in a bag data structure?

  • To check if an item exists in the bag.
  • To clear all items from the bag.
  • To remove an item by its value. (correct)
  • To remove an item by its index.
  • Which member function can be used to access the total number of elements in the data structure?

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

    How is the subscript operator overloaded in the context of a data structure class?

    <p>It is used for both retrieving and setting array element values.</p> Signup and view all the answers

    What is one characteristic of static arrays mentioned in the content?

    <p>They are managed by the compiler's memory.</p> Signup and view all the answers

    Which of the following statements correctly describes Big-O notation?

    <p>It characterizes an algorithm's efficiency independent of specific programs.</p> Signup and view all the answers

    Which of the following data structures is not mentioned as part of the course agenda?

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

    What does the fixed-size rule for arrays imply about their declaration?

    <p>The size must be known at compile time.</p> Signup and view all the answers

    Which data structure is not part of the specified data structures for the semester?

    <p>Array List</p> Signup and view all the answers

    Which aspect of algorithm analysis is emphasized in the content provided?

    <p>Algorithm analysis is important for understanding efficiency.</p> Signup and view all the answers

    What is a key feature of items stored in a static array?

    <p>They are limited to a single data type.</p> Signup and view all the answers

    What characterizes a Bag data structure?

    <p>It is an unordered collection that may contain duplicates.</p> Signup and view all the answers

    Which of the following statements about the size of a Bag is true?

    <p>Bags must track the number of elements with a size data member.</p> Signup and view all the answers

    What is the Big-O efficiency for searching for an item in an unordered Bag?

    <p>BigO(n)</p> Signup and view all the answers

    How is the maximum size of a Bag typically defined?

    <p>As the capacity beyond which elements cannot be added.</p> Signup and view all the answers

    What is the efficiency of the operation to remove an item from an unordered Bag?

    <p>BigO(n)</p> Signup and view all the answers

    Which operation in a Bag keeps the data structure empty?

    <p>Clear All Items</p> Signup and view all the answers

    What type of algorithm efficiency is associated with getting an item at a specified index in a Bag?

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

    What does the term 'fixed size' mean in the context of a Bag data structure?

    <p>The Bag can never hold more than a certain number of elements.</p> Signup and view all the answers

    Which function is NOT necessary for maintaining the integrity of a Bag data structure?

    <p>Automatically sort items in the Bag</p> Signup and view all the answers

    What is the purpose of the size member in a Bag data structure?

    <p>To keep track of the number of elements currently in the Bag.</p> Signup and view all the answers

    Study Notes

    CSC 1061 Data Structures: Bag (Static Array)

    • Course content focuses on designing and implementing collection classes using partially filled arrays to store elements.
    • Accurate class invariants are crucial for successful implementation.
    • Algorithm analysis, including Big O notation, is vital for understanding efficiency.

    Objectives

    • Design and implement classes that use partially filled arrays for element storage.
    • Accurately write and maintain invariants for each implemented class.
    • Grasp why algorithm analysis is essential to understanding efficiency.
    • Master Big O notation and other relevant techniques of algorithm analysis.

    Static Arrays

    • Static arrays are compiler-managed arrays, not related to C++ class-level static variables.
    • Stored in the stack section of memory.
    • Maintain a consistent data type for all elements.
    • Fixed size at compile time, immutable during runtime.
    • Array indices are 0-based.
    • Array declarations determine fixed size (not a zero-based count).

    Agenda (Week 4)

    • Arrays, Data Structures/Collections, Big-O Analysis.
    • Bag Data Structure, Bag Algorithm Efficiency.
    • Invariant, Bag ADT.

    Array Challenge

    • Complete questions 1 and 2 of the array challenge provided, skipping question 3.
    • The challenge only relates to arrays and does not involve C++.

    Data Structures Overview

    • Data structures provide efficient storage and organization of data.
    • This course will cover static arrays, dynamic arrays, linked lists, stacks, queues, graphs, binary trees, heaps, and B-trees.

    Collections

    • Read tutorials and complete activities related to collections and arrays.
    • Skip activities related to 1.10.2 Vectors as these will be covered later.

    Algorithm Analysis

    • Read and complete activities from the tutorial covering algorithm analysis, excluding activities related to 2.2.1.

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    Description

    This quiz assesses your knowledge of designing and implementing collection classes using static arrays. You'll be tested on class invariants, algorithm analysis, and the significance of Big O notation for understanding efficiency. Dive deep into the concepts of partially filled arrays and their usage in data structures.

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