Here you can find the source of findIdx(int startidx, int endidx, ZonedDateTime endDate, List
private static int findIdx(int startidx, int endidx, ZonedDateTime endDate, List<ZonedDateTime> holidays)
//package com.java2s; /*/* w w w . j a v a 2 s . c om*/ * Copyright 2014 jmrozanec * Licensed 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. */ import java.time.ZonedDateTime; import java.util.List; public class Main { private static int findIdx(int startidx, int endidx, ZonedDateTime endDate, List<ZonedDateTime> holidays) { if (startidx == endidx) { return startidx; } int pivot = (endidx - startidx) / 2; if (holidays.get(pivot).equals(endDate)) { return pivot; } if (holidays.get(pivot).isBefore(endDate)) { return findIdx(++pivot, endidx, endDate, holidays); } else { return findIdx(startidx, pivot, endDate, holidays); } } }