Podcast
Questions and Answers
Which of the following terms refers to the original class in inheritance?
Which of the following terms refers to the original class in inheritance?
- Derived
- Subclass
- Parent (correct)
- Child
A derived class cannot inherit properties of a superclass.
A derived class cannot inherit properties of a superclass.
False (B)
What type of relationship does proper inheritance create?
What type of relationship does proper inheritance create?
Is-A
An abstract method is a method that is declared without a ______.
An abstract method is a method that is declared without a ______.
Match the following sorting strategies with their descriptions:
Match the following sorting strategies with their descriptions:
What does the compareTo method return if input1 is equal to input2?
What does the compareTo method return if input1 is equal to input2?
Polymorphism allows a single method to have multiple implementations.
Polymorphism allows a single method to have multiple implementations.
What is an abstract class?
What is an abstract class?
The compareTo method compares two inputs and returns a value, which can be ______, 0, or +.
The compareTo method compares two inputs and returns a value, which can be ______, 0, or +.
What is the primary purpose of a search pool?
What is the primary purpose of a search pool?
Which of the following scenarios could cause an exception to be thrown?
Which of the following scenarios could cause an exception to be thrown?
The call stack trace provides the method, file, and line number where the exception occurred.
The call stack trace provides the method, file, and line number where the exception occurred.
What is the purpose of a try-catch statement?
What is the purpose of a try-catch statement?
An exception is first thrown from the top of the call stack and, if not caught, it drops down to the ______ method.
An exception is first thrown from the top of the call stack and, if not caught, it drops down to the ______ method.
Match the following standard I/O streams with their descriptions:
Match the following standard I/O streams with their descriptions:
What is the condition that terminates the recursive processing known as?
What is the condition that terminates the recursive processing known as?
If there is no base case in recursion, it results in infinite recursion.
If there is no base case in recursion, it results in infinite recursion.
Describe the difference between direct recursion and indirect recursion.
Describe the difference between direct recursion and indirect recursion.
Each call to a recursive method creates a new ______ in which to work.
Each call to a recursive method creates a new ______ in which to work.
Which reserved word allows us to handle exceptions?
Which reserved word allows us to handle exceptions?
What operation does a stack use to add an item?
What operation does a stack use to add an item?
In a queue, the first item added is the first item removed.
In a queue, the first item added is the first item removed.
What is the key advantage of using a linked list over an array?
What is the key advantage of using a linked list over an array?
The last element added to a stack is the first to be removed, following the ______ policy.
The last element added to a stack is the first to be removed, following the ______ policy.
Match the following data structures with their characteristics:
Match the following data structures with their characteristics:
Which of the following best describes a linked list?
Which of the following best describes a linked list?
Stable sorting guarantees that elements with the same value remain in the same order in the output.
Stable sorting guarantees that elements with the same value remain in the same order in the output.
What are the two primary functions used to maintain a stack?
What are the two primary functions used to maintain a stack?
A ________ is a data structure where each element points to its successor.
A ________ is a data structure where each element points to its successor.
Which of the following data structures can be implemented using references?
Which of the following data structures can be implemented using references?
What is the primary policy for a queue?
What is the primary policy for a queue?
The Enqueue operation removes items from the front of the queue.
The Enqueue operation removes items from the front of the queue.
What do the head and tail of a queue represent?
What do the head and tail of a queue represent?
In a binary tree, each node can have no more than ____ child nodes.
In a binary tree, each node can have no more than ____ child nodes.
Which of the following methods is used to add a new entry to a map?
Which of the following methods is used to add a new entry to a map?
A directed graph does not have a defined root.
A directed graph does not have a defined root.
What is a lambda function?
What is a lambda function?
A ____ is a data collection that establishes a relationship between keys and values.
A ____ is a data collection that establishes a relationship between keys and values.
What is a TreeMap?
What is a TreeMap?
Flashcards
Inheritance
Inheritance
A fundamental object-oriented design technique used to create and organize reusable classes. It allows a new class to inherit properties and methods from an existing class.
Parent Class
Parent Class
The class that provides the properties and methods for a derived class.
Child Class
Child Class
The class that inherits properties and methods from a parent class.
Is-A Relationship
Is-A Relationship
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Transitive Inheritance
Transitive Inheritance
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Abstract Method
Abstract Method
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Abstract Class
Abstract Class
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Polymorphism
Polymorphism
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Sorting
Sorting
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compareTo Method
compareTo Method
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Exception
Exception
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Call Stack Trace
Call Stack Trace
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Try-Catch Statement
Try-Catch Statement
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Exception Propagation
Exception Propagation
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Throwable Class
Throwable Class
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System.in
System.in
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System.out
System.out
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System.err
System.err
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Recursion
Recursion
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Base Case
Base Case
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Collection
Collection
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Stable Sorting
Stable Sorting
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Unstable Sorting
Unstable Sorting
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Abstract Data Type (ADT)
Abstract Data Type (ADT)
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Static Data Structure
Static Data Structure
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Dynamic Data Structure
Dynamic Data Structure
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Reference (Pointer)
Reference (Pointer)
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Linked List
Linked List
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Stack
Stack
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Queue
Queue
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Graph
Graph
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Directed Graph
Directed Graph
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Undirected Graph
Undirected Graph
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Map
Map
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TreeMap
TreeMap
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HashMap
HashMap
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Lambda Function
Lambda Function
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Study Notes
CSIT-112 Final Study Guide
- This final exam will cover the entire course, emphasizing the second half.
- Familiarize yourself with all concepts in the guide.
Lecture 1
- Inheritance: A fundamental object-oriented design technique for creating and organizing reusable classes.
- Original Class References: Parent, Super, Base
- Derived Class References: Child, Subclass
- Inheritance Relationship: Is-A
Lecture 2
- Transitive Inheritance: A subclass inherits properties from the top-level class.
- Abstract Method: A method declared without implementation (method header only).
- Abstract Class: Represents general concepts shared by derived classes.
Lecture 4
- Polymorphism: Allows defining a single interface with multiple implementations.
- Polymorphic Reference Behavior: A method called through a polymorphic reference might behave differently depending on the object.
Lecture 5
- Sorting: Arranging items in a specific order.
- Selection Sort Strategy:
- Find the smallest value.
- Swap with the first element.
- Find the next smallest value.
- Swap with the second element.
- Repeat until all elements are in their correct positions.
Lecture 6
compareTo
Method: Compares two inputs and returns a value.- Negative value if input1 < input2
- Zero if input1 = input2
- Positive value if input1 > input2
- Insertion Sort Strategy: Insert each element into its correct position in the sorted portion of the array.
Lecture 7
- Search Pool: A group of items.
Lecture 8
- Exception: A problem or unusual situation arising during program execution.
- Exception Scenarios: Dividing by zero, attempting to read a non-existent file, array index out of bounds, etc.
- Call Stack Trace: Shows the sequence of method calls leading up to the exception.
- Includes: the method, file, and line number where the exception originated.
Lecture 9
- Try-Catch Statement: Allows testing code blocks for errors, handling potential issues.
- Exception Propagation: Handles exceptions not caught by the immediate method by passing them up the call stack.
Lecture 10
- Standard I/O Streams:
System.out
,System.in
,System.err
.System.out
: Console output.System.in
: Keyboard input.System.err
: Error output.
Lecture 11
- Recursion: Defining something in terms of itself.
- Base Case: A condition that halts the recursive process.
- Recursive Techniques Examples: Problems covered so far.
Lecture 12
- Direct Recursion: A method calls itself directly.
- Indirect Recursion: A method calls another method, which then calls the original method.
- Example Recursive Functions:
sum
,factorial
.
Lecture 13
- Collection: An object that stores other objects.
- Stable Sorting: Maintains the relative order of elements with equal values.
- Unstable Sorting: Does not guarantee the relative order of equal elements.
- Abstract Data Type (ADT): A collection of data and operations.
- Static Data Structure: Fixed size.
- Dynamic Data Structure: Resizable.
- References/Pointers: Dynamic linking between objects.
- Data Structures: Trees, Linked Lists, Graphs.
Lecture 14
- Stack: A linear data structure following LIFO (Last-In, First-Out) principle.
- Stack Operations: Push, Pop, Top.
- Stack Representation: Visual Representation
Lecture 15
- Non-Linear Data Structures: Trees, Graphs.
- Tree Characteristics: Nodes, edges, root, parent, children, key, height.
- Binary Tree: Each node has a maximum of two children.
- Leaf Node: A node with no children.
Lecture 16
- Maps: Collections that store key-value pairs.
- Efficiency in Maps: Efficient for finding values given a key.
- Map Implementations: TreeMap, HashMap.
- Key-value Pairs: Examples.
- Methods (HashMap):
put
,get
. - Lambda Expressions: Used for concise, functional-style programming.
- Lambda Limitations: Cannot contain variables, assignments, or statements (if or for loops).
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