距离2012年11月2日下午2:05:31 已经过去158751270这么多秒了，不小心暴露了我的当前时间。
java代码贴出来。
private static long gettimelong() { long result = new Date().getTime() - new Date("2012/11/02 14:05:31").getTime(); return result / 1000; }
五道口------------->阜成门:
最短路程为:五道口-知春路-西直门-车公庄-阜成门(4.937 km)
我这是web版本，加上程序的执行还有网络的阻塞时间定义为t、则t=184-82=102（ms）
北京地铁站那么多，是怎么计算得如此之快呢？
本人思路：
（1）小明要从a点去c点，那么首先获取a点附近的换乘站：GetTheNearestTransferStation（a）、返回ArrayList<Station>定义为al；
同理再次获取c点附近的换乘站GetTheNearestTransferStation（c）；返回ArrayList<Station>定义为cl；
（2）经过上述步骤1我们得到了两个对象al和cl，然后通过获取最近两个车站GetTheNearestTwoStations（al，cl），返回ArrayList<Station>定义为sl；
（3）根据坐标系，东南西北，以及西南，东北，西北，东南等八个方位角进行图的遍历。
（3）得到最优的一条路线记为Lin1，然后再计算line1的各个属性值。
（4）显示在界面上。完毕！
运行环境：Android2.2+
/* * Project Name:BeiJingS * File Name:上面是数据的存储 * Package Name: * Date:2012年11月2日下午2:05:31 * Copyright (c) 2017, xx@163.com xx Rights Reserved. * */ package cn.chenfei.WeidghtAD; /* *@author xx *@version 1.0.0 */ public class Data { public Data() { // // TODO: Add constructor logic here // } public static java.util.Hashtable<String, double[]> LoadDC() { java.util.Hashtable<String, double[]> DCht = new java.util.Hashtable<String, double[]>(); DCht.put("复兴门", new double[] { 0, 0 }); DCht.put("车公庄庄", new double[] { 0, 1 }); DCht.put("西直门", new double[] { 0, 2 }); DCht.put("知春路", new double[] { 0, 3 }); DCht.put("西二旗", new double[] { 0, 4 }); DCht.put("南邵", new double[] { 0, 5 }); DCht.put("西单", new double[] { 1, 0 }); DCht.put("平安里", new double[] { 1, 1 }); DCht.put("鼓楼大街", new double[] { 2, 2 }); DCht.put("北土城", new double[] { 2, 3 }); DCht.put("霍营", new double[] { 2, 4 }); DCht.put("回龙观东大街", new double[] { 2, 5 }); DCht.put("天通苑北", new double[] { 3, 5 }); DCht.put("立水桥", new double[] { 3, 4 }); DCht.put("惠新西街南口", new double[] { 3, 3 }); DCht.put("雍和宫", new double[] { 3, 2 }); DCht.put("东四", new double[] { 3, 1 }); DCht.put("东单", new double[] { 3, 0 }); DCht.put("俸伯", new double[] { 4, 5 }); DCht.put("望京西", new double[] { 4, 4 }); DCht.put("芍药居", new double[] { 4, 3 }); DCht.put("东直门", new double[] { 4, 2 }); DCht.put("朝阳门", new double[] { 4, 1 }); DCht.put("建国门", new double[] { 4, 0 }); DCht.put("三元桥", new double[] { 5, 2 }); DCht.put("呼家楼", new double[] { 5, 1 }); DCht.put("草房", new double[] { 6, 1 }); DCht.put("国贸", new double[] { 5, 0 }); DCht.put("四惠惠", new double[] { 6, 0 }); DCht.put("四惠东", new double[] { 7, 0 }); DCht.put("土桥", new double[] { 7, -1 }); DCht.put("崇文门", new double[] { 3, -1 }); //1 DCht.put("磁器口", new double[] { 3, -1.2 }); //1 DCht.put("蒲黄榆", new double[] { 3, -1.4 }); //1 DCht.put("宋家庄", new double[] { 3, -2 }); DCht.put("次渠", new double[] { 3, -3 }); DCht.put("宣武门", new double[] { 0, -1 }); //DCht.Add("首经贸", new double[] { 0, -2 }); DCht.put("安河桥北", new double[] { -1, 4 }); DCht.put("海淀黄庄", new double[] { -1, 3 }); DCht.put("国家图书馆", new double[] { -1, 2 }); DCht.put("白石桥南", new double[] { -1, 1 }); DCht.put("六里桥", new double[] { -2, -1.2 }); //1 DCht.put("西局", new double[] { -2, -1.4 }); //1 DCht.put("郭公庄", new double[] { -3, -1.2 }); //1 DCht.put("苏庄", new double[] { -4, -1.2 }); //1 DCht.put("慈寿寺", new double[] { -2, 1 }); DCht.put("公主坟", new double[] { -2, 0 }); DCht.put("海淀五路居", new double[] { -3, 1 }); DCht.put("苹果园", new double[] { -3, 0 }); DCht.put("张郭庄", new double[] { -3, -1.4 }); //1 DCht.put("南锣鼓巷", new double[] { 2, 1 }); DCht.put("北京西站", new double[] { -1, -1.2 }); //1 DCht.put("菜市口", new double[] { 0, -1.2 }); //1 DCht.put("北京南站", new double[] { 0, -1.4 }); //1 DCht.put("角门西", new double[] { 0, -2 }); DCht.put("天宫院", new double[] { 0, -3 }); DCht.put("十里河", new double[] { 5, -1.4 }); //1 DCht.put("双井", new double[] { 5, -1.2 }); //1 DCht.put("大望路", new double[] { 5.2, 0 }); //1 DCht.put("雨台", new double[] { 5.2, 0 }); //1 return DCht; } private static void SWAP(java.util.HashSet<String[]> backlist, RefObject<String[]> arry, String b1, String b2, String len, String m) { arry.argvalue = new String[4]; arry.argvalue[0] = b1; arry.argvalue[1] = b2; arry.argvalue[2] = len; arry.argvalue[3] = m; backlist.add(arry.argvalue); arry.argvalue = null; arry.argvalue = new String[4]; arry.argvalue[0] = b2; arry.argvalue[1] = b1; arry.argvalue[2] = len; arry.argvalue[3] = m; backlist.add(arry.argvalue); arry.argvalue = null; } public static java.util.HashSet<String[]> LoadDD() { String[] arry = null; java.util.HashSet<String[]> backlist = new java.util.HashSet<String[]>(); String b1 = ""; String b2 = ""; String len = ""; String timem = ""; //13号线开始 b1 = "西直门"; b2 = "知春路"; len = "4.1"; timem = "7"; RefObject<String[]> tempRef_arry = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry, b1, b2, len, timem); arry = tempRef_arry.argvalue; b1 = "西二旗"; b2 = "知春路"; len = "9.3"; timem = "15"; RefObject<String[]> tempRef_arry2 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry2, b1, b2, len, timem); arry = tempRef_arry2.argvalue; b1 = "霍营"; b2 = "西二旗"; len = "7.1"; timem = "10"; RefObject<String[]> tempRef_arry3 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry3, b1, b2, len, timem); arry = tempRef_arry3.argvalue; b1 = "霍营"; b2 = "立水桥"; len = "4.8"; timem = "10"; RefObject<String[]> tempRef_arry4 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry4, b1, b2, len, timem); arry = tempRef_arry4.argvalue; b1 = "望京西"; b2 = "立水桥"; len = "9.1"; timem = "20"; RefObject<String[]> tempRef_arry5 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry5, b1, b2, len, timem); arry = tempRef_arry5.argvalue; b1 = "望京西"; b2 = "芍药居"; len = "2"; timem = "10"; RefObject<String[]> tempRef_arry6 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry6, b1, b2, len, timem); arry = tempRef_arry6.argvalue; b1 = "东直门"; b2 = "芍药居"; len = "3.9"; timem = "10"; RefObject<String[]> tempRef_arry7 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry7, b1, b2, len, timem); arry = tempRef_arry7.argvalue; //13号线结束 //昌平线号线开始 b1 = "南邵"; b2 = "西二旗"; len = "21.2"; timem = "40"; RefObject<String[]> tempRef_arry8 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry8, b1, b2, len, timem); arry = tempRef_arry8.argvalue; //昌平线号线end //8号线开始 b1 = "回龙观东大街"; b2 = "霍营"; len = "1.1"; timem = "5"; RefObject<String[]> tempRef_arry9 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry9, b1, b2, len, timem); arry = tempRef_arry9.argvalue; b1 = "北土城"; b2 = "霍营"; len = "13.2"; timem = "30"; RefObject<String[]> tempRef_arry10 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry10, b1, b2, len, timem); arry = tempRef_arry10.argvalue; b1 = "北土城"; b2 = "鼓楼大街"; len = "3.2"; timem = "10"; RefObject<String[]> tempRef_arry11 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry11, b1, b2, len, timem); arry = tempRef_arry11.argvalue; //8号线end //5号线开始 8号线开始 13 昌平线 b1 = "天通苑北"; b2 = "立水桥"; len = "3.4"; timem = "10"; RefObject<String[]> tempRef_arry12 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry12, b1, b2, len, timem); arry = tempRef_arry12.argvalue; b1 = "惠新西街南口"; b2 = "立水桥"; len = "8.6"; timem = "20"; RefObject<String[]> tempRef_arry13 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry13, b1, b2, len, timem); arry = tempRef_arry13.argvalue; b1 = "惠新西街南口"; b2 = "雍和宫"; len = "3.3"; timem = "10"; RefObject<String[]> tempRef_arry14 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry14, b1, b2, len, timem); arry = tempRef_arry14.argvalue; b1 = "东四"; b2 = "雍和宫"; len = "2.7"; timem = "10"; RefObject<String[]> tempRef_arry15 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry15, b1, b2, len, timem); arry = tempRef_arry15.argvalue; b1 = "东四"; b2 = "东单"; len = "1.8"; timem = "10"; RefObject<String[]> tempRef_arry16 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry16, b1, b2, len, timem); arry = tempRef_arry16.argvalue; b1 = "崇文门"; b2 = "东单"; len = "0.887"; timem = "5"; RefObject<String[]> tempRef_arry17 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry17, b1, b2, len, timem); arry = tempRef_arry17.argvalue; b1 = "崇文门"; b2 = "磁器口"; len = "0.8"; timem = "2"; RefObject<String[]> tempRef_arry18 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry18, b1, b2, len, timem); arry = tempRef_arry18.argvalue; b1 = "磁器口"; b2 = "菜市口"; len = "3.6"; timem = "4"; RefObject<String[]> tempRef_arry19 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry19, b1, b2, len, timem); arry = tempRef_arry19.argvalue; b1 = "磁器口"; b2 = "双井"; len = "4.6"; timem = "3"; RefObject<String[]> tempRef_arry20 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry20, b1, b2, len, timem); arry = tempRef_arry20.argvalue; b1 = "磁器口"; b2 = "蒲黄榆"; len = "3.1"; timem = "6"; RefObject<String[]> tempRef_arry21 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry21, b1, b2, len, timem); arry = tempRef_arry21.argvalue; b1 = "北京南站"; b2 = "蒲黄榆"; len = "6.1"; timem = "5"; RefObject<String[]> tempRef_arry22 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry22, b1, b2, len, timem); arry = tempRef_arry22.argvalue; b1 = "宋家庄"; b2 = "蒲黄榆"; len = "2.7"; timem = "5"; RefObject<String[]> tempRef_arry23 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry23, b1, b2, len, timem); arry = tempRef_arry23.argvalue; //5号线end //5号线 ,8号线, 13号线 ,昌平线 ,2 b1 = "西直门"; b2 = "鼓楼大街"; len = "3.7"; timem = "10"; RefObject<String[]> tempRef_arry24 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry24, b1, b2, len, timem); arry = tempRef_arry24.argvalue; b1 = "雍和宫"; b2 = "鼓楼大街"; len = "2"; timem = "4"; RefObject<String[]> tempRef_arry25 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry25, b1, b2, len, timem); arry = tempRef_arry25.argvalue; b1 = "雍和宫"; b2 = "东直门"; len = "2.3"; timem = "4"; RefObject<String[]> tempRef_arry26 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry26, b1, b2, len, timem); arry = tempRef_arry26.argvalue; b1 = "朝阳门"; b2 = "东直门"; len = "1.9"; timem = "4"; RefObject<String[]> tempRef_arry27 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry27, b1, b2, len, timem); arry = tempRef_arry27.argvalue; b1 = "朝阳门"; b2 = "建国门"; len = "2.5"; timem = "4"; RefObject<String[]> tempRef_arry28 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry28, b1, b2, len, timem); arry = tempRef_arry28.argvalue; b1 = "崇文门"; b2 = "建国门"; len = "2.8"; timem = "4"; RefObject<String[]> tempRef_arry29 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry29, b1, b2, len, timem); arry = tempRef_arry29.argvalue; b1 = "崇文门"; b2 = "宣武门"; len = "3.7"; timem = "7"; RefObject<String[]> tempRef_arry30 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry30, b1, b2, len, timem); arry = tempRef_arry30.argvalue; b1 = "复兴门"; b2 = "宣武门"; len = "2.2"; timem = "4"; RefObject<String[]> tempRef_arry31 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry31, b1, b2, len, timem); arry = tempRef_arry31.argvalue; b1 = "复兴门"; b2 = "车公庄庄"; len = "2.8"; timem = "5"; RefObject<String[]> tempRef_arry32 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry32, b1, b2, len, timem); arry = tempRef_arry32.argvalue; b1 = "西直门"; b2 = "车公庄庄"; len = "0.837"; timem = "2"; RefObject<String[]> tempRef_arry33 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry33, b1, b2, len, timem); arry = tempRef_arry33.argvalue; ////5号线 ,8号线, 13号线 ,昌平线 ,2 : 2号线end ////5号线 ,8号线, 13号线 ,昌平线 ,2 : 4号线begin b1 = "安河桥北"; b2 = "海淀黄庄"; len = "7.4"; timem = "14"; RefObject<String[]> tempRef_arry34 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry34, b1, b2, len, timem); arry = tempRef_arry34.argvalue; b1 = "国家图书馆"; b2 = "海淀黄庄"; len = "3.7"; timem = "7"; RefObject<String[]> tempRef_arry35 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry35, b1, b2, len, timem); arry = tempRef_arry35.argvalue; b1 = "国家图书馆"; b2 = "西直门"; len = "3"; timem = "6"; RefObject<String[]> tempRef_arry36 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry36, b1, b2, len, timem); arry = tempRef_arry36.argvalue; b1 = "平安里"; b2 = "西直门"; len = "2.2"; timem = "5"; RefObject<String[]> tempRef_arry37 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry37, b1, b2, len, timem); arry = tempRef_arry37.argvalue; b1 = "平安里"; b2 = "西单"; len = "2.9"; timem = "5"; RefObject<String[]> tempRef_arry38 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry38, b1, b2, len, timem); arry = tempRef_arry38.argvalue; b1 = "宣武门"; b2 = "西单"; len = "0.828"; timem = "2"; RefObject<String[]> tempRef_arry39 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry39, b1, b2, len, timem); arry = tempRef_arry39.argvalue; b1 = "宣武门"; b2 = "菜市口"; len = "1.2"; timem = "4"; RefObject<String[]> tempRef_arry40 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry40, b1, b2, len, timem); arry = tempRef_arry40.argvalue; b1 = "北京南站"; b2 = "菜市口"; len = "2.8"; timem = "5"; RefObject<String[]> tempRef_arry41 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry41, b1, b2, len, timem); arry = tempRef_arry41.argvalue; b1 = "北京南站"; b2 = "角门西"; len = "2.5"; timem = "5"; RefObject<String[]> tempRef_arry42 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry42, b1, b2, len, timem); arry = tempRef_arry42.argvalue; b1 = "天宫院"; b2 = "角门西"; len = "22.9"; timem = "38"; RefObject<String[]> tempRef_arry43 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry43, b1, b2, len, timem); arry = tempRef_arry43.argvalue; ////5号线 ,8号线, 13号线 ,昌平线 ,2 ,4 : 4号线end ////5号线 ,8号线, 13号线 ,昌平线 ,2 ,4, : 10号线begin b1 = "西局"; b2 = "六里桥"; len = "1.6"; timem = "3"; RefObject<String[]> tempRef_arry44 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry44, b1, b2, len, timem); arry = tempRef_arry44.argvalue; b1 = "公主坟"; b2 = "六里桥"; len = "3.4"; timem = "6"; RefObject<String[]> tempRef_arry45 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry45, b1, b2, len, timem); arry = tempRef_arry45.argvalue; b1 = "公主坟"; b2 = "慈寿寺"; len = "3.4"; timem = "6"; RefObject<String[]> tempRef_arry46 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry46, b1, b2, len, timem); arry = tempRef_arry46.argvalue; b1 = "海淀黄庄"; b2 = "慈寿寺"; len = "7.3"; timem = "14"; RefObject<String[]> tempRef_arry47 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry47, b1, b2, len, timem); arry = tempRef_arry47.argvalue; b1 = "海淀黄庄"; b2 = "知春路"; len = "2.1"; timem = "4"; RefObject<String[]> tempRef_arry48 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry48, b1, b2, len, timem); arry = tempRef_arry48.argvalue; b1 = "北土城"; b2 = "知春路"; len = "4.4"; timem = "9"; RefObject<String[]> tempRef_arry49 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry49, b1, b2, len, timem); arry = tempRef_arry49.argvalue; b1 = "北土城"; b2 = "惠新西街南口"; len = "2"; timem = "4"; RefObject<String[]> tempRef_arry50 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry50, b1, b2, len, timem); arry = tempRef_arry50.argvalue; b1 = "芍药居"; b2 = "惠新西街南口"; len = "1.7"; timem = "3"; RefObject<String[]> tempRef_arry51 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry51, b1, b2, len, timem); arry = tempRef_arry51.argvalue; b1 = "芍药居"; b2 = "三元桥"; len = "2.7"; timem = "5"; RefObject<String[]> tempRef_arry52 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry52, b1, b2, len, timem); arry = tempRef_arry52.argvalue; b1 = "呼家楼"; b2 = "三元桥"; len = "4.4"; timem = "9"; RefObject<String[]> tempRef_arry53 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry53, b1, b2, len, timem); arry = tempRef_arry53.argvalue; b1 = "呼家楼"; b2 = "国贸"; len = "1.6"; timem = "4"; RefObject<String[]> tempRef_arry54 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry54, b1, b2, len, timem); arry = tempRef_arry54.argvalue; b1 = "宋家庄"; b2 = "十里河"; len = "4.2"; timem = "8"; RefObject<String[]> tempRef_arry55 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry55, b1, b2, len, timem); arry = tempRef_arry55.argvalue; b1 = "蒲黄榆"; b2 = "十里河"; len = "2.3"; timem = "3"; RefObject<String[]> tempRef_arry56 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry56, b1, b2, len, timem); arry = tempRef_arry56.argvalue; b1 = "宋家庄"; b2 = "角门西"; len = "4.9"; timem = "9"; RefObject<String[]> tempRef_arry57 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry57, b1, b2, len, timem); arry = tempRef_arry57.argvalue; b1 = "西局"; b2 = "角门西"; len = "7.9"; timem = "14"; RefObject<String[]> tempRef_arry58 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry58, b1, b2, len, timem); arry = tempRef_arry58.argvalue; ////5号线 ,8号线, 13号线 ,昌平线 ,2 ,4, : 10号线end ////昌平线,1,2,4,5,8,10,13, :1号线开始 b1 = "苹果园"; b2 = "公主坟"; len = "12.7"; timem = "22"; RefObject<String[]> tempRef_arry59 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry59, b1, b2, len, timem); arry = tempRef_arry59.argvalue; b1 = "复兴门"; b2 = "公主坟"; len = "4"; timem = "8"; RefObject<String[]> tempRef_arry60 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry60, b1, b2, len, timem); arry = tempRef_arry60.argvalue; b1 = "复兴门"; b2 = "西单"; len = "1.7"; timem = "3"; RefObject<String[]> tempRef_arry61 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry61, b1, b2, len, timem); arry = tempRef_arry61.argvalue; b1 = "东单"; b2 = "西单"; len = "3.6"; timem = "8"; RefObject<String[]> tempRef_arry62 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry62, b1, b2, len, timem); arry = tempRef_arry62.argvalue; b1 = "东单"; b2 = "建国门"; len = "2.3"; timem = "3"; RefObject<String[]> tempRef_arry63 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry63, b1, b2, len, timem); arry = tempRef_arry63.argvalue; b1 = "国贸"; b2 = "建国门"; len = "2.8"; timem = "4"; RefObject<String[]> tempRef_arry64 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry64, b1, b2, len, timem); arry = tempRef_arry64.argvalue; b1 = "国贸"; b2 = "大望路"; len = "1.4"; timem = "3"; RefObject<String[]> tempRef_arry65 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry65, b1, b2, len, timem); arry = tempRef_arry65.argvalue; b1 = "国贸"; b2 = "双井"; len = "1.7"; timem = "3"; RefObject<String[]> tempRef_arry66 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry66, b1, b2, len, timem); arry = tempRef_arry66.argvalue; b1 = "十里河"; b2 = "双井"; len = "3.1"; timem = "6"; RefObject<String[]> tempRef_arry67 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry67, b1, b2, len, timem); arry = tempRef_arry67.argvalue; b1 = "大望路"; b2 = "四惠惠"; len = "1.6"; timem = "3"; RefObject<String[]> tempRef_arry68 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry68, b1, b2, len, timem); arry = tempRef_arry68.argvalue; b1 = "四惠东"; b2 = "四惠惠"; len = "1.7"; timem = "3"; RefObject<String[]> tempRef_arry69 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry69, b1, b2, len, timem); arry = tempRef_arry69.argvalue; ////昌平线,1,2,4,5,8,10,13, :1号线end ////昌平线,1,2,4,5,6,8,10,13, :6号线begin b1 = "海淀五路居"; b2 = "慈寿寺"; len = "1.5"; timem = "3"; RefObject<String[]> tempRef_arry70 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry70, b1, b2, len, timem); arry = tempRef_arry70.argvalue; b1 = "白石桥南"; b2 = "慈寿寺"; len = "2.7"; timem = "5"; RefObject<String[]> tempRef_arry71 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry71, b1, b2, len, timem); arry = tempRef_arry71.argvalue; b1 = "白石桥南"; b2 = "车公庄庄"; len = "2.5"; timem = "5"; RefObject<String[]> tempRef_arry72 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry72, b1, b2, len, timem); arry = tempRef_arry72.argvalue; b1 = "平安里"; b2 = "车公庄庄"; len = "1.5"; timem = "3"; RefObject<String[]> tempRef_arry73 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry73, b1, b2, len, timem); arry = tempRef_arry73.argvalue; b1 = "平安里"; b2 = "南锣鼓巷"; len = "2.7"; timem = "5"; RefObject<String[]> tempRef_arry74 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry74, b1, b2, len, timem); arry = tempRef_arry74.argvalue; b1 = "东四"; b2 = "南锣鼓巷"; len = "1.9"; timem = "4"; RefObject<String[]> tempRef_arry75 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry75, b1, b2, len, timem); arry = tempRef_arry75.argvalue; b1 = "朝阳门"; b2 = "东四"; len = "2.6"; timem = "3"; RefObject<String[]> tempRef_arry76 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry76, b1, b2, len, timem); arry = tempRef_arry76.argvalue; b1 = "朝阳门"; b2 = "呼家楼"; len = "2.3"; timem = "5"; RefObject<String[]> tempRef_arry77 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry77, b1, b2, len, timem); arry = tempRef_arry77.argvalue; b1 = "草房"; b2 = "呼家楼"; len = "13.2"; timem = "22"; RefObject<String[]> tempRef_arry78 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry78, b1, b2, len, timem); arry = tempRef_arry78.argvalue; ////昌平线,1,2,4,5,6,8,10,13, :6号线end ////"昌平线","1","2","4","5","6","8","9","10","13", 9 begin b1 = "国家图书馆"; b2 = "白石桥南"; len = "1.1"; timem = "3"; RefObject<String[]> tempRef_arry79 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry79, b1, b2, len, timem); arry = tempRef_arry79.argvalue; b1 = "北京西站"; b2 = "白石桥南"; len = "4.4"; timem = "9"; RefObject<String[]> tempRef_arry80 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry80, b1, b2, len, timem); arry = tempRef_arry80.argvalue; b1 = "六里桥"; b2 = "郭公庄"; len = "7.7"; timem = "14"; RefObject<String[]> tempRef_arry81 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry81, b1, b2, len, timem); arry = tempRef_arry81.argvalue; ////"昌平线","1","2","4","5","6","8","9","10","13", 9 end ////"昌平线","房山线","1","2","4","5","6","8","9","10","13", 房山线 begin b1 = "苏庄"; b2 = "郭公庄"; len = "23.1"; timem = "38"; RefObject<String[]> tempRef_arry82 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry82, b1, b2, len, timem); arry = tempRef_arry82.argvalue; ////"昌平线","房山线","1","2","4","5","6","8","9","10","13", 房山线end ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15", 15 begin b1 = "望京西"; b2 = "俸伯"; len = "30.4"; timem = "48"; RefObject<String[]> tempRef_arry83 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry83, b1, b2, len, timem); arry = tempRef_arry83.argvalue; ////"昌平线","房山线","1","2","4","5","6","8","9","10","13","15", 15end ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15","亦庄线" 亦庄线 begin b1 = "宋家庄"; b2 = "次渠"; len = "21.7"; timem = "37"; RefObject<String[]> tempRef_arry84 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry84, b1, b2, len, timem); arry = tempRef_arry84.argvalue; ////"昌平线","房山线","1","2","4","5","6","8","9","10","13","15","亦庄线" 亦庄线end ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15","亦庄线" ,"八通线" 八通线 begin b1 = "四惠东"; b2 = "土桥"; len = "16.6"; timem = "29"; RefObject<String[]> tempRef_arry85 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry85, b1, b2, len, timem); arry = tempRef_arry85.argvalue; ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15","亦庄线" ,"八通线" 八通线 end ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15","亦庄线" ,"八通线" 14 begin b1 = "西局"; b2 = "张郭庄"; len = "11"; timem = "18"; RefObject<String[]> tempRef_arry86 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry86, b1, b2, len, timem); arry = tempRef_arry86.argvalue; ////"昌平线","房山线","1","2","4","5","6","8","9","10","13" "15","亦庄线" ,"八通线" 14 end b1 = "西局"; b2 = "北京南站"; len = "7"; timem = "10"; RefObject<String[]> tempRef_arry87 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry87, b1, b2, len, timem); arry = tempRef_arry87.argvalue; b1 = "鼓楼大街"; b2 = "南锣鼓巷"; len = "2.5"; timem = "9"; RefObject<String[]> tempRef_arry88 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry88, b1, b2, len, timem); arry = tempRef_arry88.argvalue; b1 = "北京西站"; b2 = "六里桥"; len = "2.6"; timem = "5"; RefObject<String[]> tempRef_arry89 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry89, b1, b2, len, timem); arry = tempRef_arry89.argvalue; b1 = "北京西站"; b2 = "菜市口"; len = "5"; timem = "7"; RefObject<String[]> tempRef_arry90 = new RefObject<String[]>(arry); SWAP(backlist, tempRef_arry90, b1, b2, len, timem); arry = tempRef_arry90.argvalue; return backlist; } }
/* * Project Name:BeiJingS * File Name: * Package Name: * Date:2012年11月2日下午2:05:31 * Copyright (c) 2017, xx@163.com xx Rights Reserved. * */ package cn.chenfei.WeidghtAD; /* *@author xx *@version 1.0.0 */ public class AllLines { public AllLines() { } public static java.util.HashSet<String> GetPreOrNextNode(String stationname) { java.util.ArrayList<String[]> liststr = new java.util.ArrayList<String[]>(); java.util.ArrayList<int[]> listint = new java.util.ArrayList<int[]>(); String[] Lin1 = { "苹果园", "古城", "八角游乐园", "八宝山", "玉泉路", "五棵松", "万寿路", "公主坟", "军事博物馆", "木樨地", "南礼士路", "复兴门", "西单", "天安门西", "天安门东", "王府井", "东单", "建国门", "永安里", "国贸", "大望路", "四惠", "四惠东" }; int[] Lin1isnode = { 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 10, 1, 1 }; liststr.add(Lin1); listint.add(Lin1isnode); String[] Lin2 = { "车公庄", "阜成门", "复兴门", "长椿街", "宣武门", "和平门", "前门", "崇文门", "北京站", "建国门", "朝阳门", "东四十条", "东直门", "雍和宫", "安定门", "鼓楼大街", "积水潭", "西直门" }; int[] Lin2isnode = { 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1 }; liststr.add(Lin2); listint.add(Lin2isnode); String[] Line4 = { "安河桥北", "北宫门", "西苑", "圆明园", "北京大学东门", "中关村", "海淀黄庄", "人民大学", "魏公村", "国家图书馆", "动物园", "西直门", "新街口", "平安里", "西四", "灵境胡同", "西单", "宣武门", "菜市口", "陶然亭", "北京南站", "马家堡", "角门西", "公益西桥", "新宫", "西红门", "高米店北", "高米店南", "枣园", "清源路", "黄村西大街", "黄村火车站", "义和庄", "生物医药基地", "天宫院" }; int[] Line4node = { 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; liststr.add(Line4); listint.add(Line4node); //checked line nodes begin String[] Line5 = { "宋家庄", "刘家窑", "蒲黄榆", "天坛东门", "磁器口", "崇文门", "东单", "灯市口", "东四", "张自忠路", "北新桥", "雍和宫", "和平里北街", "和平西桥", "惠新西街南口", "惠新西街北口", "大屯路东", "北苑路北", "立水桥南", "立水桥", "天通苑南", "天通苑", "天通苑北" }; int[] Line5node = { 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1 }; liststr.add(Line5); listint.add(Line5node); String[] Line6 = { "海淀五路居", "慈寿寺", "花园桥", "白石桥南", "车公庄西", "车公庄", "平安里", "北海北", "南锣鼓巷", "东四", "朝阳门", "东大桥", "呼家楼", "金台路", "十里堡", "青年路", "褡裢坡", "黄渠", "常营", "草房" }; int[] Line6node = { 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1 }; liststr.add(Line6); listint.add(Line6node); String[] Line8 = { "鼓楼大街", "安华桥", "北土城", "奥体中心", "奥林匹克公园", "森林公园南门", "林萃桥", "永泰庄", "西小口", "育新", "霍营", "回龙观东大街" }; int[] Line8node = { 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 1, 1 }; liststr.add(Line8); listint.add(Line8node); String[] Line9 = { "郭公庄", "丰台科技园", "科怡路", "丰台南路", "丰台东大街", "七里庄", "六里桥", "六里桥东", "北京西站", "白堆子", "白石桥南", "国家图书馆" }; int[] Line9node = { 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 1, 1 }; liststr.add(Line9); listint.add(Line9node); String[] Line10 = { "慈寿寺", "车道沟", "长春桥", "火器营", "巴沟", "苏州街", "海淀黄庄", "知春里", "知春路", "西土城", "牡丹园", "健德门", "北土城", "安贞门", "惠新西街南口", "芍药居", "太阳宫", "三元桥", "亮马桥", "农业展览馆", "团结湖", "呼家楼", "金台夕照", "国贸", "双井", "劲松", "潘家园", "十里河", "分钟寺", "成寿寺", "宋家庄", "石榴庄", "大红门", "角门东", "角门西", "草桥", "纪家庙", "首经贸", "丰台站", "泥洼", "西局", "六里桥", "莲花桥", "公主坟", "西钓鱼台" }; int[] Linen10node = { 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1 }; liststr.add(Line10); listint.add(Linen10node); String[] Line13 = { "东直门", "柳芳", "光熙门", "芍药居", "望京西", "北苑", "立水桥", "霍营", "回龙观", "龙泽", "西二旗", "上地", "五道口", "知春路", "大钟寺", "西直门" }; int[] Line13node = { 1, 0, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1 }; liststr.add(Line13); listint.add(Line13node); String[] Line14 = { "西局", "大井", "郭庄子", "大瓦窑", "园博园", "张郭庄" }; int[] Line14node = { 1, 0, 0, 0, 0, 1 }; liststr.add(Line14); listint.add(Line14node); String[] Line15 = { "俸伯", "顺义", "石门", "南法信", "后沙峪", "花梨坎", "国展", "孙河", "马泉营", "崔各庄", "望京", "望京西" }; int[] Line15node = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; liststr.add(Line15); listint.add(Line15node); String[] Linebt = { "土桥", "临河里", "梨园", "九棵树", "果园", "通州北苑", "八里桥", "管庄", "双桥", "传媒大学", "高碑店", "四惠东", "四惠" }; int[] Linebtnode = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 }; liststr.add(Linebt); listint.add(Linebtnode); String[] Linecp = { "西二旗", "生命科学园", "朱辛庄", "巩华城", "沙河", "沙河高教园", "南邵" }; int[] Linecpnode = { 1, 0, 0, 0, 0, 0, 1 }; liststr.add(Linecp); listint.add(Linecpnode); String[] Lineyz = { "宋家庄", "肖村", "小红门", "旧宫", "亦庄桥", "亦庄文化园", "万源街", "荣京东街", "荣昌东街", "同济南路", "经海路", "次渠南", "次渠" }; int[] Linezynode = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; liststr.add(Lineyz); listint.add(Linezynode); String[] Linefs = { "苏庄", "良乡南关", "良乡大学城西", "良乡大学城", "良乡大学城北", "广阳城", "篱笆房", "长阳", "稻田", "大葆台", "郭公庄" }; int[] Linefsnode = { 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1 }; liststr.add(Linefs); listint.add(Linefsnode); String[] tempstr = null; int b = -1; int a = -1; int isend = 0; java.util.HashSet<String> hs = null; for (int x = 0; x < liststr.size(); x++) { if (isend == 1) { break; } tempstr = liststr.get(x); hs = new java.util.HashSet<String>(); //新增 for (String s : tempstr) { if(!hs.contains(s)) hs.add(s); } /** * O(1) */ if (hs.contains(stationname) == true) { hs = null; for (int y = 0; y < tempstr.length; y++) { if (stationname.equals(tempstr[y])) { a = x; b = y; //find out the index values isend = 1; break; } } } else { hs = null; continue; } tempstr = null; } int[] tint = listint.get(a); int pre = b; while (pre > -1) { if (tint[pre] == 1) { break; } pre = pre - 1; } int next = b; while (next < tint.length) { if (tint[next] == 1) { break; } next = next + 1; } java.util.HashSet<String> hr = new java.util.HashSet<String>(); hr.add(liststr.get(a)[pre]); hr.add(liststr.get(a)[next]); return hr; } }
/* * Project Name:BeiJingS * File Name: * Package Name: * Date:2012年11月2日下午2:05:31 * Copyright (c) 2017, xx@163.com xx Rights Reserved. * */ package cn.chenfei.WeidghtAD; /* *@author xx *@version 1.0.0 */ public class DAL { private java.util.HashSet<String[]> maindata = null; private java.util.Hashtable<String, double[]> DCht = null; //换乘站 private int isend = 1; private java.util.HashSet<String> fresult = new java.util.HashSet<String>(); //查找符合的路线 private java.util.Hashtable<String, String> mainht = new java.util.Hashtable<String, String>(); //换乘站集合A-B,A-C private String begin = ""; private String end = ""; private String temp = ""; private String beginpre = ""; private String endnext = ""; private String toto = ""; public String Search(String b,String e) { begin=b; end=e; toto = begin + ">" + end + ":"; DCht = Data.LoadDC(); ///加载换乘站坐标 if (DCht.containsKey(RepsIN(begin)) == false || DCht.containsKey(RepsIN(end)) == false) { //获取开始点和结束点的最近的两个换乘站 java.util.HashSet<String> beginhs = null;//begin node obj java.util.HashSet<String> endsshs = null;//end node obj if (DCht.containsKey(RepsIN(begin)) == false) { beginpre = begin + "-"; beginhs = AllLines.GetPreOrNextNode(begin); } if (DCht.containsKey(RepsIN(end)) == false) { endnext = "-" + end; endsshs = AllLines.GetPreOrNextNode(end); } //开始节点就是换乘站 if (beginhs == null) { beginhs = new java.util.HashSet<String>(); beginhs.add(begin); } //结束点就是换乘节点 if (endsshs == null) { endsshs = new java.util.HashSet<String>(); endsshs.add(end); } java.util.ArrayList<String> be = GetShortestPath(beginhs, endsshs); beginhs = null; endsshs = null; //不需要换乘 if (be == null) { toto=toto+begin + endnext; return toto; } begin = be.get(0);//获取开始节点至结束点最近的起始节点 end = be.get(1);//获取距离最近的结束点的结束点 //相遇 if (be.get(0).equals(be.get(1))) { toto=toto+beginpre + begin + endnext; return toto; } } //RefObject<String> tempRef_begin = new RefObject<String>(begin); // RefObject<String> tempRef_end = new RefObject<String>(end); String resultendString= SearchWrite(begin, end); return resultendString; } //获取两点之间最短距离 private java.util.ArrayList<String> GetShortestPath(java.util.HashSet<String> begin, java.util.HashSet<String> end) { /* for(String s : begin) System.out.println("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"+s); for(String s : end) System.out.println("yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy"+s); */ int recount = 0; java.util.ArrayList<String> rehs = null;//返回最近的坐标 double tem = 0; double min = -1; double[] bd = null; double[] ed = null; for (String a : begin)//遍历开始节点附近最近的换乘节点 { bd = DCht.get(RepsIN(a));//获取该坐标 for (String b : end)//遍历结束节点附近最近的换乘节点 { if (a.equals(b)) { recount += 1; } ed = DCht.get(RepsIN(b)); tem = Math.pow((bd[0] - ed[0]), 2) + Math.pow((bd[1] - ed[1]), 2); if (min == -1) { min = tem; rehs = new java.util.ArrayList<String>(); rehs.add(a); rehs.add(b); } else if (min > tem) { min = tem; rehs = new java.util.ArrayList<String>(); rehs.add(a); rehs.add(b); } } } if (recount == 2) { return null;//未找到 } return rehs; } private String SearchWrite(String begin, String end) { begin = RepsIN(begin); end = RepsIN(end); LoadData(begin, end); java.util.HashSet<String> beginlist = new java.util.HashSet<String>(); beginlist.add(begin); GetF(beginlist); toto=toto+"最短换乘路线为:" + GetMinQuk(fresult); return RepsOUT(toto); } private String RepsOUT(String s) { if (s.contains("沙河高教园")) { return s.replace("车公庄庄", "车公庄").replace("四惠惠", "四惠"); } return s.replace("车公庄庄", "车公庄").replace("高教园", "沙河高教园").replace("四惠惠", "四惠"); } private String RepsIN(String s) { if (s.equals("四惠东")) { return s; } if (s.equals("车公庄庄")) { return s; } return s.replace("车公庄", "车公庄庄").replace("沙河高教园", "高教园").replace("四惠", "四惠惠"); } private String GetMinQuk(java.util.HashSet<String> nage) { String resultsrt = ""; String[] nagearry = null; java.text.DecimalFormat df=new java.text.DecimalFormat("#.##"); double val, minval = Integer.MAX_VALUE; for (String s : nage) { nagearry = s.split("[-]", -1); //s个数组 val = GetVal(nagearry); if (val < minval) { minval = val; resultsrt = beginpre + s + endnext +"-"+ df.format(val); } nagearry = null; } return resultsrt; } private double GetVal(String[] findarry) { double val = 0; for (int ss = 0; ss < findarry.length - 1; ss = ss + 1) { for (String[] aa : maindata) { if (findarry[ss].equals(aa[0]) && findarry[ss + 1].equals(aa[1])) { val += Double.parseDouble(aa[2]); break; } } } return val; } private boolean isadd = false; private java.util.HashSet<String> returnlist = null; private String[] earry = null; private double[] bxy = null; private double[] exy = null; private String temgstr = ""; /** * 时间复杂度比较复杂，因为换乘结点的关系导致的 最坏情况下(每个站之间都有连线，但是地铁线路图实际上是不存在次情况的):O(2^n) 相反 最优情况下(之间只有唯一的连接点,次情况下也不是很现实的，有的地铁换乘是多个换乘点都在同一条线上的) 此时用hashtable所以是:O(1) */ private java.util.HashSet<String> GetF(java.util.HashSet<String> beginlist) { if (mainht == null || mainht.isEmpty()) { return null; } returnlist = new java.util.HashSet<String>(); if (beginlist.isEmpty()) { isend = 1; } else { for (String f : beginlist) ///O(n) { if (f.indexOf(end) > -1) //线路包含目的地e { temp = f.substring(0, f.lastIndexOf(end) + end.length()); if (fresult.contains(temp) == false) ///O(1) { fresult.add(temp); } } else if (endchxy.indexOf('-') > -1) //线路不包含目的地 并且目的地有连接结点 { temp = f.substring(f.lastIndexOf('-') + 1); if (temp.equals(endchxy.substring(0, endchxy.indexOf('-')))) { temp = f + endchxy.substring(endchxy.indexOf('-')); if (fresult.contains(temp) == false) ///O(1) { fresult.add(temp); } } } } /**O(n) */ for (String strbegin : beginlist) { if (strbegin.indexOf("-") == -1 && mainht.containsKey(strbegin) == true) //have this key and first load data { bxy = DCht.get(strbegin); earry = mainht.get(strbegin).toString().split("[,]", -1); for (String ar : earry) { exy = DCht.get(ar); isadd = CK(isadd, bxy, exy); if (isadd == true) { returnlist.add(strbegin + "-" + ar); isend = 0; } } } else if (strbegin.indexOf("-") > -1 && mainht.containsKey(strbegin.substring(strbegin.lastIndexOf("-") + 1)) == true) { temgstr = strbegin.substring(strbegin.lastIndexOf("-") + 1); bxy = DCht.get(temgstr); earry = mainht.get(temgstr).toString().split("[,]", -1); //exchange node for (String ar : earry) { exy = DCht.get(ar); isadd = CK(isadd, bxy, exy); if (isadd == true) { if (!strbegin.contains(ar)) { returnlist.add(strbegin + "-" + ar); } isend = 0; } } } } } earry = null; if (isend == 0) { return GetF(returnlist); } else { return null; } } //East South West North Northeast Northwest Southeast Southwest private boolean CK(boolean isadd, double[] bxy, double[] exy) { if (dx >= 0 && dy >= 0 && exy[0] >= bxy[0] && exy[1] >= bxy[1] && exy[0] <= ex && exy[1] <= ey) //1 x增大y增大 { isadd = true; } else if (dx >= 0 && dy <= 0 && exy[0] >= bxy[0] && exy[1] <= bxy[1] && exy[0] <= ex && exy[1] >= ey) //2 x增大y减小 { isadd = true; } else if (dx <= 0 && dy >= 0 && exy[0] <= bxy[0] && exy[1] >= bxy[1] && exy[0] >= ex && exy[1] <= ey) //3 x减小y增大 { isadd = true; } else if (dx <= 0 && dy <= 0 && exy[0] <= bxy[0] && exy[1] <= bxy[1] && exy[0] >= ex && exy[1] >= ey) //4 x减小y减小 { isadd = true; } else if (dx >= 0 && dy == 0 && exy[0] >= bxy[0] && exy[1] == bxy[1] && exy[1] == ey && exy[0] <= ex) //5 x增大y不变 { isadd = true; } else if (dx == 0 && dy >= 0 && exy[0] == bxy[0] && exy[1] >= bxy[1] && exy[0] == ex && exy[1] <= ey) //6 x不变y增大 { isadd = true; } else if (dx <= 0 && dy == 0 && exy[0] <= bxy[0] && exy[1] == bxy[1] && exy[1] == by && exy[0] >= ex) //7 x减小y不变 { isadd = true; } else if (dx == 0 && dy <= 0 && exy[0] == bxy[0] && exy[1] <= bxy[1] && exy[0] == bx && exy[1] >= ey) //8 x不变 y减小 { isadd = true; } else { isadd = false; } return isadd; } private double bx, by, ex, ey; private double dx, dy; private String endchxy; private int ChxyE(String stationname) { endchxy = stationname; String[] arr = null; double[] xy = null; if (stationname.indexOf("-") == -1) { arr = mainht.get(stationname).toString().split("[,]", -1); xy = DCht.get(stationname); //获取坐标 ex = xy[0]; ey = xy[1]; } else { arr = mainht.get(stationname.substring(0, stationname.indexOf("-"))).toString().split("[,]", -1); xy = DCht.get(stationname.substring(0, stationname.indexOf("-"))); //获取坐标 } java.util.ArrayList<String> lis = new java.util.ArrayList<String>(); for (int s = 0; s < arr.length; s++) { if (!stationname.contains(arr[s])) { lis.add(arr[s]); } } if (lis.size() == 1) { xy = DCht.get(arr[0]); //获取坐标 ex = xy[0]; ey = xy[1]; xy = null; stationname = arr[0] + "-" + stationname; return ChxyE(stationname); } else { xy = null; return -1; } } private int ChxyB(String stationname) { String[] arr = null; double[] xy = null; if (stationname.indexOf("-") == -1) { arr = mainht.get(stationname).toString().split("[,]", -1); xy = DCht.get(stationname); //获取坐标 } else { arr = mainht.get(stationname.substring(stationname.lastIndexOf("-") + 1)).toString().split("[,]", -1); xy = DCht.get(stationname.substring(stationname.lastIndexOf("-") + 1)); //获取坐标 } bx = xy[0]; by = xy[1]; for (int s = 0; s < arr.length; s++) { if (stationname.equals(arr[s])) { arr[s] = null; } } if (arr.length == 1) { xy = DCht.get(arr[0]); //获取坐标 bx = xy[0]; by = xy[1]; xy = null; stationname = stationname + "-" + arr[0]; return ChxyB(stationname); } else { xy = null; return -1; } } private void LoadData(String beginp, String endp) { maindata = Data.LoadDD(); ///加载换乘结点之间的关系数据 //O(n^2) for (String[] sa : maindata) { if (mainht.containsKey(sa[0])) //含有此键值 { continue; } for (String[] sd : maindata) { if (sa[0].equals(sd[0])) { if (mainht.containsKey(sa[0])) //含有此键值 { mainht.put(sa[0], mainht.get(sa[0]) + "," + sd[1]); } else //新增 { mainht.put(sa[0], sd[1]); } } } } ChxyB(beginp); //处理开始点 ChxyE(endp); //处理结束点 dx = ex - bx; //目的坐标-起始坐标 dy = ey - by; //目的坐标-起始坐标 } }
还有就是RefObject<T>
/* * Project Name:BeiJingS * File Name: * Package Name: * Date:2012年11月2日下午2:05:31 * Copyright (c) 2017, xx@163.com xx Rights Reserved. * */ package cn.chenfei.WeidghtAD; /* *@author xx *@version 1.0.0 */ //---------------------------------------------------------------------------------------- // Copyright ? 2006 - 2010 Tangible Software Solutions Inc. // This class can be used by anyone provided that the copyright notice remains intact. // // This class is used to simulate the ability to pass arguments by reference in Java. //---------------------------------------------------------------------------------------- public final class RefObject<T> { public T argvalue; public RefObject(T refarg) { argvalue = refarg; } }
/* * Project Name:BeiJingS * File Name: * Package Name: * Date:2012年11月2日下午2:05:31 * Copyright (c) 2017, xx@163.com xx Rights Reserved. * */ package cn.chenfei.WeidghtAD; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.EditText; import android.widget.ListView; import android.widget.Toast; import android.widget.ArrayAdapter; import java.util.ArrayList; /* *@author xx *@version 1.0.0 */ public class WeidghtADActivity extends Activity { private EditText b, e; private Button btn1,btn2; private ListView listv; private ArrayList<String> arrayList=new ArrayList<String>(); /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); //全屏 代码必须加在onCreate和setContentView之间 this.requestWindowFeature(Window.FEATURE_NO_TITLE); this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); b=(EditText)this.findViewById(R.id.txtb); e=(EditText)this.findViewById(R.id.txte); btn1=(Button)this.findViewById(R.id.btn1); btn2=(Button)this.findViewById(R.id.btn2); listv= (ListView)findViewById(R.id.MyListView); btn2.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { System.exit(0); } }); btn1.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { String beginString = b.getText().toString(); String endString = e.getText().toString(); if (beginString.equals("")) { MSG("请输入起点!"); return; } else if (endString.equals("")) { MSG("请输入终点!"); return; } else if(beginString.equals(endString)){ MSG("请不要输入相同的起始点!"); return; } else if(beginString.equals("北京大学东门")&&endString.equals("立水桥")) { beginString = e.getText().toString(); endString = b.getText().toString(); } try { DAL dal = new DAL(); String resultString = dal.Search(beginString, endString); dal=null; Opreatestring(resultString); } catch (Exception e) { // TODO: handle exception MSG("未查询到符合条件的路线!"); } } }); } // 显示消息 private void MSG(String msg) { Toast.makeText(WeidghtADActivity.this, msg, Toast.LENGTH_SHORT).show(); } //处理返回来的字符串 private void Opreatestring(String s) { if(s.length()<1) return; s=s+"-AAA";//不然会少一个数据 String sa=s.substring(s.lastIndexOf(":")+1).trim(); String[] array= sa.split("[-]", -1); arrayList.clear(); int i=1; for(String temps :array) { if(!temps.trim().equals("AAA")) { arrayList.add(temps.trim()); } i++; } ArrayList<String> arrayList2=new ArrayList<String>(); int length=arrayList.size(); if(length>2) { for(i=0;i<length;i++) { if(i<(length-1)) { arrayList2.add((i+1)+":"+arrayList.get(i)); } else { arrayList2.add("最短路程:"+arrayList.get(i)+"km"); arrayList2.add(" "); } } } else { for(String asd :arrayList) { arrayList2.add(asd); } arrayList2.add("起点和终点路程较近、不需要换乘"); } LoadData(arrayList2); } //加载数据到listview上面 private void LoadData(ArrayList<String> a) { listv.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, a)); } }
图的遍历有两种遍历方式：深度优先遍历(depth-first search)和广度优先遍历(breadth-first search)。
图的遍历是指从图中的任一顶点出发，对图中的所有顶点访问一次且只访问一次。图的遍历操作和树的遍历操作功能相似。图的遍历是图的一种基本操作，图的其它算法如求解图的连通性问题，拓扑排序，求关键路径等都是建立在遍历算法的基础之上。
由于图结构本身的复杂性，所以图的遍历操作也较复杂，主要表现在以下四个方面：
① 在图结构中，没有一个“自然”的首结点，图中任意一个顶点都可作为第一个被访问的结点。
② 在非连通图中，从一个顶点出发，只能够访问它所在的连通分量上的所有顶点，因此，还需考虑如何选取下一个出发点以访问图中其余的连通分量。
③ 在图结构中，如果有回路存在，那么一个顶点被访问之后，有可能沿回路又回到该顶点。
④ 在图结构中，一个顶点可以和其它多个顶点相连，当这样的顶点访问过后，存在如何选取下一个要访问的顶点的问题。
图的遍历通常有深度优先搜索和广度优先搜索两种方式，他们对无向图和有向图都适用。
基本思想：首先从图中某个顶点v0出发，访问此顶点，然后依次从v0相邻的顶点出发深度优先遍历，直至图中所有与v0路径相通的顶点都被访问了；若此时尚有顶点未被访问，则从中选一个顶点作为起始点，重复上述过程，直到所有的顶点都被访问。可以看出深度优先遍历是一个递归的过程。
基本思想：首先，从图的某个顶点v0出发，访问了v0之后，依次访问与v0相邻的未被访问的顶点，然后分别从这些顶点出发，广度优先遍历，直至所有的顶点都被访问完。
c++实现
#include<iostream> #include<queue> #include<stack> #include<stdlib.h> #define MAX 100 using namespace std; typedef struct { int edges[MAX][MAX]; //邻接矩阵 int n; //顶点数 int e; //边数 }MGraph; bool visited[MAX]; //标记顶点是否被访问过 void creatMGraph(MGraph &G) //用引用作参数 { int i,j; int s,t; //存储顶点编号 int v; //存储边的权值 for(i=0;i<G.n;i++) //初始化 { for(j=0;j<G.n;j++) { G.edges[i][j]=0; } visited[i]=false; } for(i=0;i<G.e;i++) //对矩阵相邻的边赋权值 { scanf("%d %d %d",&s,&t,&v); //输入边的顶点编号以及权值 G.edges[s][t]=v; } } void DFS(MGraph G,int v) //深度优先搜索 { int i; printf("%d ",v); //访问结点v visited[v]=true; for(i=0;i<G.n;i++) //访问与v相邻的未被访问过的结点 { if(G.edges[v][i]!=0&&visited[i]==false) { DFS(G,i); } } } void DFS1(MGraph G,int v) //非递归实现 { stack<int> s; printf("%d ",v); //访问初始结点 visited[v]=true; s.push(v); //入栈 while(!s.empty()) { int i,j; i=s.top(); //取栈顶顶点 for(j=0;j<G.n;j++) //访问与顶点i相邻的顶点 { if(G.edges[i][j]!=0&&visited[j]==false) { printf("%d ",j); //访问 visited[j]=true; s.push(j); //访问完后入栈 break; //找到一个相邻未访问的顶点，访问之后则跳出循环 } } if(j==G.n) //如果与i相邻的顶点都被访问过，则将顶点i出栈 s.pop(); } } void BFS(MGraph G,int v) //广度优先搜索 { queue<int> Q; //STL模板中的queue printf("%d ",v); visited[v]=true; Q.push(v); while(!Q.empty()) { int i,j; i=Q.front(); //取队首顶点 Q.pop(); for(j=0;j<G.n;j++) //广度遍历 { if(G.edges[i][j]!=0&&visited[j]==false) { printf("%d ",j); visited[j]=true; Q.push(j); } } } } int main(void) { int n,e; //建立的图的顶点数和边数 while(scanf("%d %d",&n,&e)==2&&n>0) { MGraph G; G.n=n; G.e=e; creatMGraph(G); DFS(G,0); printf("\n"); // DFS1(G,0); // printf("\n"); // BFS(G,0); // printf("\n"); } return 0; }logs_code_collapse">View Code
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