Here you can find the source of roundUp(int dividend, int divisor)
private static int roundUp(int dividend, int divisor)
//package com.java2s; /*/*from w w w .j av a 2 s . c o m*/ * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to you under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { private static int roundUp(int dividend, int divisor) { int remainder = dividend % divisor; dividend -= remainder; if (remainder * 2 > divisor) { dividend += divisor; } return dividend; } /** * Rounds a dividend to the nearest divisor. * For example roundUp(31, 10) yields 30; roundUp(37, 10) yields 40. * @param dividend Number to be divided * @param divisor Number to divide by * @return Rounded dividend */ private static long roundUp(long dividend, long divisor) { long remainder = dividend % divisor; dividend -= remainder; if (remainder * 2 > divisor) { dividend += divisor; } return dividend; } }