Ap computer - Study guides, Class notes & Summaries

AP Computer Science Exam Questions and Answers 100% Pass What is the purpose of using loops in programming? Loops allow repeated execution of a block of code until a specified condition is met, making programs more efficient by automating repetitive tasks. How do arrays help in managing data in a program? Arrays help manage data by storing multiple values of the same type in a single, ordered collection. They allow easy access to and manipulation of data using indices. What...

AP Computer Science - Chapter 2 Review Questions with Verified Solutions Which of the following data types is used to store a single character in Java? A) `String` B) `int` C) `char` D) `boolean` Answer: C) char What will be the result of the following code snippet? ```java int a = 10; int b = 3; int result = a / b; 2 Sln(result); ``` A) `3.33` B) `3` C) `10` D) `0` Answer: B) 3 How do you declare an `ArrayList` of `Integer` objects in Java? A) `A...

AP Computer Science Principles Exam Prep with Verified Answers What is a "nested loop" and how is it used? A nested loop is a loop within another loop, used to iterate over multidimensional data structures or perform complex repetitive tasks. What does "code modularity" involve and why is it beneficial? Code modularity involves breaking code into smaller, reusable modules or functions, improving readability, maintainability, and testability. How does "recursion" work and wh...

AP Computer Science A Unit 3 Progress Check: MCQ with Complete Solutions What is a `Boolean expression`? A Boolean expression is an expression that evaluates to either `true` or `false`. Explain the purpose of an `if statement` in programming. An if statement allows a program to execute a block of code only if a specified condition is true. What does the `==` operator check for in Java? The `==` operator checks if two values are equal. How does an `else` statement work ...

AP Computer Science A Premium, 12th Edition: Prep Book with 6 Practice Tests + Comprehensive Review + Online Practice (Barron's AP Prep) 2024 with complete solution Barron’s AP Computer Science A Premium, 12th Edition includes in‑depth content review and practice. It’s the only book you’ll need to be prepared for exam day. Written by Experienced Educators Learn from Barron’s‑‑all content is written and reviewed by AP experts Build your understanding with comprehensive re...

AP Computer Science Principles Unit 1-4 Assessments Answers 100% Pass What is a key characteristic of a high-level programming language? a) Low readability b) Directly interacts with hardware c) Designed to be easy for humans to read and write d) Requires extensive knowledge of machine code c) Designed to be easy for humans to read and write Which of the following best describes an algorithm? a) A single line of code b) A step-by-step procedure for solving a problem c) A hardware ...

AP Computer Science Unit 1 Questions and Answers Already Passed What does "print" do in most programming languages? The `print` function outputs text or data to the console or screen. What is the purpose of "return" in a function? The `return` statement sends a value back to the caller of the function and ends its execution. What is an "identifier" in programming? An identifier is a name given to a variable, function, or other entities in a program to reference them. Wha...

AP Computer Science Principles 100% Verified What is a "boolean" in programming? A boolean is a data type that represents true or false values. What is the purpose of a "constructor" in a class? A constructor initializes an object's state when it is created. What is a "list" in programming? A list is a data structure that holds an ordered collection of items, which can be of different types. What does "iteration" mean in the context of loops? Iteration refers to the ...

AP Computer Science A: Unit 2 Exam with Complete Solutions Consider the following code segment: ```java public class Car { private String model; private int year; public Car(String model, int year) { = model; = year; } public String getModel() { return model; } public int getYear() { 2 return year; } } ``` What is the purpose of the `getModel()` and `getYear()` methods in this class? The `getModel()` and `getYear()` methods are accessor methods (getters)...

AP Computer Science A Unit 2 Progress Check: MCQ Part A 100% Pass What will be the output of the following code? ```java int x = 5; int y = 10; Sln(x + y); ``` A) 15 B) 510 C) 5 D) 10 Answer: A) 15 Given the following code snippet, what is the value of `result` after execution? 2 ```java int a = 8; int b = 3; int result = a % b; ``` A) 2 B) 1 C) 3 D) 5 Answer: A) 2 Which of the following statements correctly initializes an `ArrayList` of `String` ...