@@ -0,0 +1,1542 @@
+/*%0A *  Copyright 2011 Eric F. Savage, code@efsavage.com%0A *%0A *   Licensed under the Apache License, Version 2.0 (the %22License%22);%0A *   you may not use this file except in compliance with the License.%0A *   You may obtain a copy of the License at%0A *%0A *       http://www.apache.org/licenses/LICENSE-2.0%0A *%0A *   Unless required by applicable law or agreed to in writing, software%0A *   distributed under the License is distributed on an %22AS IS%22 BASIS,%0A *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A *   See the License for the specific language governing permissions and%0A *   limitations under the License.%0A */%0Apackage com.ajah.util;%0A%0A/**%0A * Utilities that do math.%0A * %0A * @author %3Ca href=%22http://efsavage.com%22%3EEric F. Savage%3C/a%3E, %3Ca%0A *         href=%22mailto:code@efsavage.com%22%3Ecode@efsavage.com%3C/a%3E.%0A * %0A */%0Apublic class MathUtils %7B%0A%0A%09/**%0A%09 * Reduces a value by a percentage, with a minimum change. Examples:%0A%09 * %0A%09 * Reducing 100 by 5%25 with a minimum of 1 would yield 95.%0A%09 * %0A%09 * Reducing 100 by 7%25 with a minimum of 10 would yield 90.%0A%09 * %0A%09 * Reducing 1 by 10%25 with a minimum of 2 would yield -2.%0A%09 * %0A%09 * @param value%0A%09 * @param percentageChange%0A%09 * @param minChange%0A%09 * @return The lesser of the value minus the value * percentage, or the%0A%09 *         value minus the minChange.%0A%09 */%0A%09public static int reduce(int value, double percentageChange, int minChange) %7B%0A%09%09int reduction = (int) (value * percentageChange);%0A%09%09if (reduction %3E minChange) %7B%0A%09%09%09return value - minChange;%0A%09%09%7D%0A%09%09return value - reduction;%0A%09%7D%0A%0A%7D

add reduce method