Light

study guides for every class

that actually explain what's on your next test

Array.length

from class:

AP Computer Science A

Definition

The property "length" in an array refers to the number of elements it contains.

congrats on reading the definition of array.length. now let's actually learn it.

ok, let's learn stuff

"Array.length" also found in:

Practice Questions (6)

What will the following code do? ```java int[] array = new int[5]; for (int i = 0; i < array.length; i++) { array[i] = i * 2; } ```
How can we rewrite the following for loop as an enhanced for loop? int[] array = {30, 2, 5, 6} for (int i = array.length-1; i >= 0; i--) { System.out.println(array[i]); }
Can we rewrite the following for loop as an enhanced for loop? boolean[] array = {true, false, false, true, false, true} for (int i = 0; i < array.length; i+=6) { System.out.println(array[i]); }
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 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; }

© 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.

Back

Practice QuizGlossary

Practice Quiz Guides

Next