Podcast
Questions and Answers
What is a fundamental requirement for a Collection data structure?
What is a fundamental requirement for a Collection data structure?
- It should be able to store a large amount of data
- It should have a simple structure for effective data processing (correct)
- It should be able to perform complex calculations
- It should have a complex algorithm for data retrieval
What is a basic operation that a Collection data structure should provide?
What is a basic operation that a Collection data structure should provide?
- Deleting the entire collection
- Converting the data to a different format
- Adding an item to the collection (correct)
- Sorting the data in ascending order
What is the index number of the last element in an array with n elements?
What is the index number of the last element in an array with n elements?
- n
- n+1
- n/2
- n-1 (correct)
How can you declare an array to store marks of 20 students?
How can you declare an array to store marks of 20 students?
What happens when you assign values to an array at the time of declaration?
What happens when you assign values to an array at the time of declaration?
What is a 2-dimensional array also known as?
What is a 2-dimensional array also known as?
How do you declare a 2-dimensional array to store the elements of a 3x4 matrix?
How do you declare a 2-dimensional array to store the elements of a 3x4 matrix?
What is the purpose of declaring an array?
What is the purpose of declaring an array?
What is the primary objective of studying data structures?
What is the primary objective of studying data structures?
What is the primary characteristic of a data structure?
What is the primary characteristic of a data structure?
What is the primary consideration when selecting a data structure?
What is the primary consideration when selecting a data structure?
Which of the following is a linear data structure?
Which of the following is a linear data structure?
What is the main difference between linear and non-linear data structures?
What is the main difference between linear and non-linear data structures?
What is the purpose of studying data structures and algorithms in software engineering?
What is the purpose of studying data structures and algorithms in software engineering?
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Study Notes
Core Operations in Data Structures
- A collection data structure should provide ways to add, remove, and find/access items.
- Additionally, it should allow checking if the collection is empty, making it empty, and retrieving a subset of the collection.
Arrays
- Array index numbers start at 0, and the last index is n-1 for an array with n elements.
- Declaring an array to store marks of 20 students would look like
int marks[20];, with valid index numbers from 0 to 19. - Arrays can be declared with initial values, and the number of elements is determined automatically, e.g.,
int marks[] = {14,56,44,36,89,43};.
2-Dimensional Arrays
- A 2D array can be used to store a matrix, such as a 3x4 matrix, and can be declared as
int matrix[3][4];.
Data Structures Introduction
- A data structure is a way to store and organize data to facilitate access and modifications.
- It represents data and the operations allowed on that data.
- Data structures are used to represent logical relationships between individual data elements to solve a given problem.
Types of Data Structures
- Linear Data Structures: Arrays, Linked Lists, Stacks, Queues
- Non-Linear Data Structures: Trees, Graphs, Hash Tables
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