44 lines
1.3 KiB
Java
44 lines
1.3 KiB
Java
//: arrays/CopyingArrays.java
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// ©2015 MindView LLC: see Copyright.txt
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// Using System.arraycopy()
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import java.util.*;
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import static com.mindviewinc.util.Print.*;
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public class CopyingArrays {
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public static void main(String[] args) {
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int[] i = new int[7];
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int[] j = new int[10];
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Arrays.fill(i, 47);
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Arrays.fill(j, 99);
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print("i = " + Arrays.toString(i));
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print("j = " + Arrays.toString(j));
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System.arraycopy(i, 0, j, 0, i.length);
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print("j = " + Arrays.toString(j));
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int[] k = new int[5];
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Arrays.fill(k, 103);
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System.arraycopy(i, 0, k, 0, k.length);
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print("k = " + Arrays.toString(k));
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Arrays.fill(k, 103);
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System.arraycopy(k, 0, i, 0, k.length);
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print("i = " + Arrays.toString(i));
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// Objects:
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Integer[] u = new Integer[10];
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Integer[] v = new Integer[5];
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Arrays.fill(u, 47);
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Arrays.fill(v, 99);
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print("u = " + Arrays.toString(u));
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print("v = " + Arrays.toString(v));
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System.arraycopy(v, 0, u, u.length/2, v.length);
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print("u = " + Arrays.toString(u));
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}
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} /* Output:
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i = [47, 47, 47, 47, 47, 47, 47]
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j = [99, 99, 99, 99, 99, 99, 99, 99, 99, 99]
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j = [47, 47, 47, 47, 47, 47, 47, 99, 99, 99]
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k = [47, 47, 47, 47, 47]
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i = [103, 103, 103, 103, 103, 47, 47]
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u = [47, 47, 47, 47, 47, 47, 47, 47, 47, 47]
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v = [99, 99, 99, 99, 99]
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u = [47, 47, 47, 47, 47, 99, 99, 99, 99, 99]
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*///:~
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