public/subjects/java/piscine/ComputeArray

ComputeArray

Instructions

Create a file ComputeArray.java.

Write a function computeArray that receives an integer array, and returns a new array with computed values.

• If the item is a multiple of 3, it is multiplied by 5
• If the item is a multiple of 3 + 1 (e.g. 1, 4, 7, ...), it is incremented by 7
• If the item is a multiple of 3 + 2 (e.g. 2, 5, 8, ...), it stays unchanged.

Expected Functions

public class ComputeArray {
    public static int[] computeArray(int[] array) {
        // your code here
    }
}

Usage

Here is a possible ExerciseRunner.java to test your function :

public class ExerciseRunner {
    public static void main(String[] args) {
        int[] array = ComputeArray.computeArray(new int[]{9, 13, 8, 23, 1, 0, 89});
        for (int i : array) {
            System.out.print(i + " ");
        }
    }
}

and its output :

$ javac *.java -d build
$ java -cp build ExerciseRunner
45 20 8 23 8 0 89
$

Notions

Array
Conditional statement
Loop statement