33 lines
1.2 KiB
Java
33 lines
1.2 KiB
Java
// collections/ModifyingArraysAsList.java
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// (c)2021 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://OnJava8.com for more book information.
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import java.util.*;
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public class ModifyingArraysAsList {
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public static void main(String[] args) {
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Random rand = new Random(47);
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Integer[] ia = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
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List<Integer> list1 =
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new ArrayList<>(Arrays.asList(ia));
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System.out.println("Before shuffling: " + list1);
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Collections.shuffle(list1, rand);
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System.out.println("After shuffling: " + list1);
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System.out.println("array: " + Arrays.toString(ia));
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List<Integer> list2 = Arrays.asList(ia);
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System.out.println("Before shuffling: " + list2);
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Collections.shuffle(list2, rand);
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System.out.println("After shuffling: " + list2);
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System.out.println("array: " + Arrays.toString(ia));
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}
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}
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/* Output:
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Before shuffling: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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After shuffling: [4, 6, 3, 1, 8, 7, 2, 5, 10, 9]
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array: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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Before shuffling: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
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After shuffling: [9, 1, 6, 3, 7, 2, 5, 10, 4, 8]
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array: [9, 1, 6, 3, 7, 2, 5, 10, 4, 8]
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*/
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