Class | Line # | Actions | |||
---|---|---|---|---|---|
ArrayUtils | 25 | 17 | 8 |
1 | /* | |
2 | * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$) | |
3 | * Copyright (C) $$Year-Rel$$ The Jalview Authors | |
4 | * | |
5 | * This file is part of Jalview. | |
6 | * | |
7 | * Jalview is free software: you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation, either version 3 | |
10 | * of the License, or (at your option) any later version. | |
11 | * | |
12 | * Jalview is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty | |
14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
15 | * PURPOSE. See the GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with Jalview. If not, see <http://www.gnu.org/licenses/>. | |
19 | * The Jalview Authors are detailed in the 'AUTHORS' file. | |
20 | */ | |
21 | package jalview.util; | |
22 | ||
23 | import java.util.Arrays; | |
24 | ||
25 | public class ArrayUtils | |
26 | { | |
27 | /** | |
28 | * Reverse the given array 'in situ' | |
29 | * | |
30 | * @param arr | |
31 | */ | |
32 | 4 | public static void reverseIntArray(int[] arr) |
33 | { | |
34 | 4 | if (arr != null) |
35 | { | |
36 | /* | |
37 | * swap [k] with [end-k] up to the half way point in the array | |
38 | * if length is odd, the middle entry is left untouched by the excitement | |
39 | */ | |
40 | 3 | int last = arr.length - 1; |
41 | 7 | for (int k = 0; k < arr.length / 2; k++) |
42 | { | |
43 | 4 | int temp = arr[k]; |
44 | 4 | arr[k] = arr[last - k]; |
45 | 4 | arr[last - k] = temp; |
46 | } | |
47 | } | |
48 | } | |
49 | ||
50 | 4 | public static <T> T[] concatArrays(T[]... arrays) |
51 | { | |
52 | 4 | if (arrays == null) |
53 | 0 | return null; |
54 | 4 | if (arrays.length == 1) |
55 | 0 | return arrays[0]; |
56 | ||
57 | 4 | T[] result = arrays[0]; |
58 | 9 | for (int i = 1; i < arrays.length; i++) |
59 | { | |
60 | 5 | result = concatTwoArrays(result, arrays[i]); |
61 | } | |
62 | 4 | return result; |
63 | } | |
64 | ||
65 | 5 | private static <T> T[] concatTwoArrays(T[] array1, T[] array2) |
66 | { | |
67 | 5 | T[] result = Arrays.copyOf(array1, array1.length + array2.length); |
68 | 5 | System.arraycopy(array2, 0, result, array1.length, array2.length); |
69 | 5 | return result; |
70 | } | |
71 | ||
72 | } |