Utils.java

/**
 * This file is part of lavagna.
 *
 * lavagna is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * lavagna 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with lavagna.  If not, see <http://www.gnu.org/licenses/>.
 */
package io.lavagna.service;

import java.util.ArrayList;
import java.util.List;

abstract class Utils {

	static List<Integer> filter(List<Integer> ids, List<Integer> toKeep) {
		List<Integer> r = new ArrayList<>();
		for (Integer id : ids) {
			if (toKeep.contains(id)) {
				r.add(id);
			}
		}
		return r;
	}
}