01 /*
02 * Java Genetic Algorithm Library (jenetics-7.1.2).
03 * Copyright (c) 2007-2023 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmail.com)
19 */
20 package io.jenetics.ext.moea;
21
22 import static java.lang.String.format;
23
24 import java.util.List;
25
26 import io.jenetics.Optimize;
27
28 /**
29 * Some vector helper methods.
30 *
31 * @author <a href="mailto:franz.wilhelmstoetter@gmail.com">Franz Wilhelmstötter</a>
32 * @version 5.2
33 * @since 4.1
34 */
35 final class Vecs {
36
37 private Vecs() {
38 }
39
40 static void checkVecLength(final int length) {
41 if (length <= 0) {
42 throw new IllegalArgumentException("Array length must greater zero.");
43 }
44 }
45
46 static void requireVecLength(final int expected, final int length) {
47 if (expected != length) {
48 throw new IllegalArgumentException(format(
49 "Expected Vec.length of %d, but got %d.",
50 expected, length
51 ));
52 }
53 }
54
55 static boolean[] toFlags(final List<Optimize> optimizes) {
56 final boolean[] flags = new boolean[optimizes.size()];
57 for (int i = 0; i < optimizes.size(); ++i) {
58 flags[i] = optimizes.get(i) == Optimize.MAXIMUM;
59 }
60 return flags;
61 }
62
63 }
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