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Return

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AP Computer Science A

Definition

The return keyword is used in functions/methods to send back a value to the caller. It terminates the execution of a function and passes control back to where it was called from.

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"Return" also found in:

Subjects (13)

Art Law and Ethics
Deep Learning Systems
Epic and Saga
Intro to Business
Intro to Python Programming
Music Production and Recording
Myth and Literature
Programming Techniques III
Soft Robotics
Sound Design for Theater
Tonal Composition
World Literature I
Writing the Narrative Short

Practice Questions (19)

What is the output of the following code? public class Calculator { public int add(int x, int y) { return x + y; } public int multiply(int x, int y) { return x * y; } public static void main(String[] args) { Calculator calc = new Calculator(); System.out.println(calc.add(5, 6) + calc.multiply(2, 3)); } }
Consider the following class definition: public class Student { private String name; private int age; private String major; public Student(String studentName, int studentAge, String studentMajor) { name = studentName; age = studentAge; major = studentMajor; } public String getName() { return name; } public int getAge() { return age; } public String getMajor() { return major; } } Assume that the following code segment appears in a class other than Student: Student student = new Student("Alice", 19, "Computer Science"); String name = student.getName(); int age = student.getAge(); String major = student.getMajor(); System.out.println(name + " is " + age + " years old and majoring in " + major + "."); What is printed as a result of executing the code segment?
Consider the following method: public static int powerOfTwo(int n) { if (n == 0) { return 1; } else { return 2 * powerOfTwo(n - 1); } } Assume that the following code segment appears in a class: int result = powerOfTwo(3); System.out.println("2 raised to the power of 3: " + result); What is printed as a result of executing the code segment?
Consider the following method: public static boolean isEven(int number) { return number % 2 == 0; } Assume that the following code segment appears in a class: boolean result = isEven(7); System.out.println("Is 7 an even number? " + result); What is printed as a result of executing the code segment?
Why does the following code not compile? public class Student { private int gpa; public getGPA() { return gpa; } // Constructor not shown }
What does the following code do? public static int codeBlock(int[] array) { int x = 1; for (int y: array) { x *= y; } return x; }
What does the following code do? public static int[] codeBlock(int[] array) { int firstItem = array[0] for (int i = 0; i < array.length - 1; i++) { array[i] = array[i+1]; } array[array.length - 1] = firstItem; return array; }
What does the following code do? public static int[] codeBlock(ArrayList<Integer> arrayList) { int[] newArray = new int[arrayList.size()]; for (int i = 0; i < arrayList.size(); i++) { newArray[i] = arrayList.get(i); } return newArray; }
What is returned by the following code if we pass in the array [65, 78, 29, 71]? public static int codeBlock(int[] array) { int a = 0; int c = 0; for (int i = 0; i < array.length - 1; i++) { int b = 1; for (int j = i + 1; j < array.length; j++) { if (array[j] == array[i]) { b++; } } if (b > c) { a = array[i]; c = b; } } return a; }
What is returned by the following code if [3, 1, 10, 8] is passed in as the argument? public static int maximum(int[] array) { int maxValue = array[0]; for (int number: array) { if (number < maxValue) { maxValue = number; } } return maxValue; }
What is returned by the following code if the array [16, 3, 5, 4] is passed in? public static int codeBlock(int[] array) { int x = 0; for (int y: array) { x += y; } return (double) sum / (array.length); }
If we call the following method on the array [10, 9, 3, 12, 5], what is returned? public static int[] codeBlock(int[] array) { int[] newArray = new int[array.length]; for (int i = 0; i < array.length; i++) { newArray[i] = array[array.length - i - 1]; } return newArray; }
What does the following method return for the array [16, 7, 20, 35, 36, 7]? public static boolean codeBlock(int[] array) { for (int i: array) { if (15 <= i <= 30) { return false; } } return true; }
After calling the following method on the array [210, 303, 198, 762, 135], what is returned? public static int codeBlock(int[] array) { int x = array.length; for (int y: array) { if (y % 2 == 0) { x--; } } return x; }
What does the following code do? public static boolean codeBlock(ArrayList<Integer> array) { for (int i = 0; i < array.size() - 1; i++) { for (int j = i + 1; j < array.size(); j++) { if (array.get(j) == array.get(i)) { return true; } } } return false; }
What does the following code do? public static boolean codeBlock(ArrayList<Integer> array) { for (int i: array) { if (i % 3 == 1 || i % 3 == 2) { return false; } } return true; }
What is returned by the following code if the passed in ArrayList is [6, 5, 5, 2, 8]? public static int codeBlock(ArrayList<Integer> array) { int x = 0; int y = 0; for (int i = 0; i < array.size() - 1; i++) { int z = 1; for (int j = i + 1; j < array.size(); j++) { if (array.get(j) == array.get(i)) { z++; } } if (z > y) { x = array.get(i); y = z; } } return x; }
What is returned by the following code if the ArrayList passed in as the argument is [7, 10, 3, 5, 1]? public static int minimum(ArrayList<Integer> array) { int minValue = 0; for (int number: array) { if (number < minValue) { minValue = number; } } return minValue; }
What does the following code return for the ArrayList [6, 10, 25, 15, 13, 10]? public static boolean codeBlock(ArrayList<Integer> array) { for (int number: array) { if (number < 5) { return false; } } return true; }

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Return

from class:

AP Computer Science A

Definition

"Return" also found in:

Subjects (13)

Practice Questions (19)

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.

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Return

from class:

AP Computer Science A

Definition

Related terms

"Return" also found in:

Subjects (13)

Practice Questions (19)

© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.

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