How to get randomly a pair elements from a 2d Array (java)

Question

I have the following Array :

arr= new int[][] { { 20, 0 }, { 2, 1 }, { 3, 2 }, { 1, 0 } };

I want getting randomly one lement from arr. For example : [3,2] or [20,0]

I'm using the following code :

Random r=new Random();        
    int rd= rand.nextInt(arr.length);

question from:https://stackoverflow.com/questions/65887465/how-to-get-randomly-a-pair-elements-from-a-2d-array-java

Answer 1

You can use int[] randomPair = arr[randomNumber];. If you want to get that numbers in seperated variables, you can add int num1 = randomPair[0];int num2 = randomPair[1];