ZDT.java

/* Copyright 2009-2015 David Hadka
 *
 * This file is part of the MOEA Framework.
 *
 * The MOEA Framework is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * The MOEA Framework is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the MOEA Framework.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.moeaframework.problem.ZDT;

import org.moeaframework.core.Solution;
import org.moeaframework.core.variable.RealVariable;
import org.moeaframework.problem.AbstractProblem;

/**
 * Implements methods shared by all problems in the ZDT test suite.
 */
public abstract class ZDT extends AbstractProblem {

	/**
	 * Constructs a ZDT problem instance with the specified number of variables.
	 * 
	 * @param numberOfVariables the number of decision variables
	 */
	public ZDT(int numberOfVariables) {
		super(numberOfVariables, 2);
	}

	@Override
	public Solution newSolution() {
		Solution solution = new Solution(numberOfVariables, 2);

		for (int i = 0; i < numberOfVariables; i++) {
			solution.setVariable(i, new RealVariable(0.0, 1.0));
		}

		return solution;
	}

}