| 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 | } |