1 | /************************************************************************************ |
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2 | * Copyright (C) 2008 by Politehnica University of Bucharest and Rutgers University |
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3 | * All rights reserved. |
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4 | * Refer to LICENSE for terms and conditions of use. |
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5 | ***********************************************************************************/ |
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6 | package vnsim.vehicular.simulator; |
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7 | |
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8 | import java.util.*; |
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9 | |
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10 | public class SortedCarVector implements java.io.Serializable { |
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11 | // a sorted vector of CarInstance objects |
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12 | |
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13 | /** <code>serialVersionUID</code> */ |
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14 | private static final long serialVersionUID = -5883719321862303634L; |
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15 | |
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16 | private ArrayList<CarInstance> cars; |
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17 | |
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18 | public SortedCarVector() { |
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19 | cars = new ArrayList<CarInstance>(); |
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20 | } |
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21 | |
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22 | public int size() { |
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23 | return cars.size(); |
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24 | } |
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25 | |
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26 | public CarInstance get(int i) { |
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27 | return cars.get(i); |
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28 | } |
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29 | |
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30 | public CarInstance get(CarInstance ci, boolean direction) { |
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31 | if (cars == null) |
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32 | return null; |
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33 | int i = Collections.binarySearch(cars, ci); |
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34 | if (i < 0) |
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35 | i = -i - 1; |
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36 | CarInstance aux; |
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37 | if (i == cars.size()) |
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38 | aux = cars.get(cars.size() - 1); |
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39 | else |
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40 | aux = cars.get(i); |
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41 | if (aux.getVehicleId() == ci.ID) |
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42 | return aux; |
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43 | if (direction == true) { |
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44 | i++; |
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45 | while (i < cars.size()) { |
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46 | aux = cars.get(i); |
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47 | if (aux.getVehicleId() == ci.ID) |
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48 | return aux; |
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49 | i++; |
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50 | } |
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51 | } else { |
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52 | i--; |
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53 | while (i >= 0) { |
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54 | aux = cars.get(i); |
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55 | if (aux.getVehicleId() == ci.ID) |
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56 | return aux; |
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57 | i--; |
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58 | } |
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59 | } |
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60 | return null; |
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61 | } |
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62 | |
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63 | public void set(int i, CarInstance c) { |
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64 | cars.set(i, c); |
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65 | } |
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66 | |
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67 | public void addCarInstance(CarInstance newCar) { |
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68 | |
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69 | // System.out.println("I HAVE TO ADD " +newCar ); |
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70 | // int i = Collections.binarySearch(cars,newCar); |
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71 | // assert (i < 0); |
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72 | // i = - i - 1; |
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73 | for (int i = 0; i < cars.size(); i++) { |
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74 | CarInstance c = cars.get(i); |
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75 | if (newCar.compareTo(c) < 0) { |
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76 | // insert it |
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77 | newCar.index = i; |
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78 | cars.add(i, newCar); |
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79 | return; |
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80 | } |
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81 | } |
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82 | newCar.index = cars.size(); |
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83 | cars.add(newCar); |
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84 | } |
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85 | |
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86 | public void remove(int ID) { |
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87 | for (int i = 0; i < cars.size(); i++) { |
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88 | CarInstance c = cars.get(i); |
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89 | if (c.ID == ID) { |
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90 | // remove it |
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91 | cars.remove(i); |
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92 | return; |
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93 | } |
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94 | } |
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95 | } |
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96 | |
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97 | public String toString() { |
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98 | String ret = " [ "; |
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99 | for (int i = 0; i < cars.size(); i++) { |
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100 | ret = ret + " ( " + cars.get(i) + " ) ; "; |
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101 | } |
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102 | ret += " ] "; |
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103 | return ret; |
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104 | } |
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105 | } |
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