1 /*
2 * Copyright 2006-2010 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package net.sourceforge.domian.test.benchmark;
17
18
19 class RandomPermutationQueenPuzzleConstellationFactory extends RandomSequenceQueenPuzzleConstellationFactory {
20
21 RandomPermutationQueenPuzzleConstellationFactory(final Long maximumNumberOfConstellationToProduce, final Long logInterval) {
22 super(maximumNumberOfConstellationToProduce, logInterval);
23 }
24
25 /* Permutation constraint; no equal elements */
26 @Override
27 protected boolean constellationConstraintOk(final int[] queenPlacingNumbers, final int queenPlacingIndex, final int queenPlacingNumber) {
28 for (int index = 0; index < queenPlacingIndex; ++index) {
29 if (queenPlacingNumber == queenPlacingNumbers[index]) {
30 return false;
31 }
32 }
33 return true;
34 }
35 }