How Can I Randomly Select an Element from an Integer Array?

Randomly Picking an Element from an Array

Picking a random element from an array is a common programming task. For instance, you may need to select a random name from a list or generate a random password.

Problem:

Given an integer array, how can we randomly select an element?

Solution:

We can use the Random class to generate a random number within the range of the array's length. This number is then used as an index to extract the random element.

import java.util.Random;

public static int getRandom(int[] array) {
    int rnd = new Random().nextInt(array.length);
    return array[rnd];
}

For example, with the array new int[]{1,2,3}, the code would generate a random number between 0 and 2 (inclusive). If the random number is 1, the element at index 1 in the array will be returned, which is 2.

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