28 lines
922 B
Java
28 lines
922 B
Java
// arrays/RaggedArray.java
|
|
// (c)2016 MindView LLC: see Copyright.txt
|
|
// We make no guarantees that this code is fit for any purpose.
|
|
// Visit http://mindviewinc.com/Books/OnJava/ 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, 13], [14], [15, 16, 17, 18]], [[19, 20, 21],
|
|
[22, 23, 24], [25], []], [[26], [], [27]]]
|
|
*/
|