Assignment 4Question1 PolynomialDesign a class named PolynomialDesign one constructors:A constructor with one parameter coeicient,which is an int array. The indexes in the array mean theexponent and the values in the array mean the coeicient.For example, if the array is {1, 0, 0, 3, 2}, itcan express the polynomial as 1 + 3X^3 + 2X^4.Design a toString() method, which can return this polynomial in a specific format, which append allelements by the way as exponent:coeicientin ascending order of its exponent value, and except theelements the coeicientvalue of which is zero.For example, if the polynomial is 1 + 3X^3 + 2X^4, the toString() method would return 0:1 3:34:2; if the polynomial is 2X - 3X^2 + 4X^4, the toString() method would return 1:2 2:-3 4:4Sample code:Output:Design a public method named public Polynomial add(Polynomial polynomial) with ananother Polynomial as a parameter. Aerexecuting the method, the original polynomial and the returnvalue would be the sum of this polynomial + parameter polynomial.Design a public method named public Polynomial minus(Polynomial polynomial) with ananother Polynomial as a parameter. Aerexecuting the method, the original polynomial and the returnvalue would be the dierenceof this polynomial - parameter polynomial.int[] p1 = {3, 1, 4, 0, 3};int[] p2 = {0, 0, 1, 3, 3, 1};int[] p3 = {4, -2, 1, -4, 0, 3};int[] p4 = {-2, 3, 1, -1, 0, 4};int[] p5 = {-2};Polynomial polynomial1 = new Polynomial(p1);Polynomial polynomial2 = new Polynomial(p2);Polynomial polynomial3 = new Polynomial(p3);Polynomial polynomial4 = new Polynomial(p4);Polynomial polynomial5 = new Polynomial(p5);System.out.println(polynomial1);System.out.println(polynomial2);System.out.println(polynomial3);System.out.println(polynomial4);System.out.println(polynomial5);0:3 1:1 2:4 4:32:1 3:3 4:3 5:10:4 1:-2 2:1 3:-4 5:30:-2 1:3 2:1 3:-1 5:40:-2Object Name name(String) stationCount(int)BAOAN Baoan 25FUTIAN Futian 51LONGGANG Longgang 22LONGHUA Longhua 9LUOHU Luohu 23NANSHAN Nanshan 49(bonus)Design a public method named public Polynomial multiply(Polynomialpolynomial) with an another Polynomial as a parameter. Aerexecuting the method, the originalpolynomial and the return value would be the product of this polynomial * parameter polynomial.Design three static methodsrespectively with another two Polynomials as parameters. The return value of those three methods is anew Polynomial that represents the sum, dierence(lepolynomial - right polymial) and product of thosetwo parameters, and the original polynmial is not changed.Question 2 BusLineIt is just a simple exercise for our assignment that the busline in our exercise is only an unidirectional linearstructure, however, the busline in real world would more complex than our exercise.1. Design a Enum Class named District.It describes the districts of Shen Zhen city, which includes:Two private field, name(String) and stationCount(int), which means the name and the total number ofStation of current district. The info data of District are shown in following table.adding any methods that you think are necessary.2. Design a Class named StationFive private data fieldsname(String): the name of Stationdistrict(District): the district of Stationlatitude(double): the latitude of Stationlongitude(double): the longitude of Stationnext(Station): it is a Station type, which means the next Station of the current one.Two constructorsA constructor with no parameter.A constructor with four parameter as followspublic static Polynomial add(Polynomial p1, Polynomial p2)public static Polynomial minus(Polynomial p1, Polynomial p2)(bonus) public static Polynomial multiply(Polynomial p1, Polynomial p2)getter and setter methods for each private fields. 代写Polynomial、java程序语言调试、java代写Please design your getter and setter methods in astandard way.Hints: What is the next Station:A method boolean equals(Station s) to judge whether two Stations are identical according to their (allattributes except next). Here you need to take the case that the parameter s is null into consideration.A method String toString() as following type:public Station()public Station(String name, District district, double latitude, double longitude)Station s1 = new Station(Taoyuan, District.NANSHAN, 22.5325, 113.92472);Station s2 = new Station(NanShan, District.NANSHAN, 22.52975, 113.9304333);s1.setNext(s2);3. Design a Class named BusLineIt describes an unidirectional linear busline that is composed by many Station.You can only design those four private data fields, do not add another fields in this class. The fieldsincludes:head(Station): the head station of busline, and usually it doesnt store any data except the next Node.tail(Station): the last station in the busline.number(String): the number of current busline, such as 81 or 74size(int): the size of current busline, and the initial value of which is 0, when adding a station, the valueof size would increase by 1.Two constructorsA constructor with no parameter.A constructor with one pareameter as follows.getter and setter methods for each private fields except size.Please design your getter and settermethods in a standard way.Add method public void addStation(Station station) : Linked the specified Station to theend of this list. The value of size would increase by 1.@Overridepublic String toString() {return Station{ +name= + name + \ +, district= + district.getName() +, latitude= + latitude +, longitude= + longitude +, next= + next +};}public BusLine()public BusLine(String number)(bonus)Add method public void addStation(Station station, int index) :Inserts thespecified Station at the specified position (index) in this busline. The value of size would increase by1.Add method public boolean isEmpty() : return true if this busline contains no Station,otherwise return false.Add method public int size() : return how many Stations in this busline.Add method public void printStation() : print the name of each Station from the first nodeto the tail. Separate names with a spaceAdd method public Station nearestStation(Station station) : Return the neareststation of the parameter station in the busline, by calculate the straight-line distance according tothe latitude and longitude.distance = Math.sqrt( dierenceof latitude^2 + dierenceof longitude ^2)The nearest station cannot equal the parameter station itself.Add method public double ratioOfDistrict(District district) : Return the ratio oftotal number of all Stations in parameter district in this busline to the total number of Stations in thisdistrict.Submission of Assignment:(1) You should submit all the source code files (with an extension “.java”).(2) You need submit those four java files “.java” Polynomial.java, District.java, Station.java, Busline.java(3) You should submit all source code directly into your sakai system, do not compress them into onefolder.(4) No Chinese characters are allowed to appear in your code.(5) No package included.(6) The output must strictly follow the description and the sample in this document and the Junit Test, andyou can only get points for each task only when you pass the test case.(7) The assignment should be submitted before the deadline (Nov. 24th). Late submissions within 24hours aerthe deadline (even a few minutes) will incur a 50% penalty, meaning that you can only get50% of the score, which you could get if the assignment was submitted before the latest deadline.Assignments submitted aerthe latest deadline will not be graded (meaning your will get a zero for theassignment).转自：http://www.6daixie.com/contents/9/4456.html
