2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
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.
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.
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.
23 import java.util.Objects;
25 public class ArrayUtils
28 * Reverse the given array 'in situ'
32 public static void reverseIntArray(int[] arr)
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
40 int last = arr.length - 1;
41 for (int k = 0; k < arr.length / 2; k++)
44 arr[k] = arr[last - k];
51 * Return the index of the first occurrence of the item in the array or -1 if
52 * the array doesn't contain the item.
55 * array to be searched
58 * @return index of the first occurrence of the item or -1 if not found
60 public static int indexOf(Object[] arr, Object item)
62 for (int i = 0; i < arr.length; i++)
64 if (Objects.equals(arr[i], item))