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Answer to Question #49529 in Java | JSP | JSF for Gina

Question #49529
How to populate an empty two-dimensional array with random numbers from 0-5?



Expert's answer
//as we receive reference to array we don't need to returnmodified array
//real array is modified at same time
private static void fillArray(int[][] arr) {
    if (arr == null) { //if someone sends anull reference
       System.out.println("No input array!");
        return;
    }
    java.util.Random random = newjava.util.Random(); //or you can import java.util.Random;
    for (int i = 0; i < arr.length; i++) {
        for (int j = 0; j <arr[i].length; j++) {
           arr[i][j] = random.nextInt(5); //5 if from 0 to 5 exlusively and
random.nextInt(6) if from 0 to 5 inclusively
        }
    }
}


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