// arrays/RaggedArray.java

// (c)2017 MindView LLC: see Copyright.txt

// We make no guarantees that this code is fit for any purpose.

// Visit http://OnJava8.com for more book information.

import java.util.*;

public class RaggedArray {

static int val = 1;

public static void main(String[] args) {

SplittableRandom rand = new SplittableRandom(47);

// 3-D array with varied-length vectors:

int[][][] a = new int[rand.nextInt(7)][][];

for(int i = 0; i < a.length; i++) {

a[i] = new int[rand.nextInt(5)][];

for(int j = 0; j < a[i].length; j++) {

a[i][j] = new int[rand.nextInt(5)];

Arrays.setAll(a[i][j], n -> val++); // [1]

}

}

System.out.println(Arrays.deepToString(a));

}

}

/* Output:

[[[1], []], [[2, 3, 4, 5], [6]], [[7, 8, 9], [10, 11,

12], []]]

*/