有一道JAVA 題不會(huì)，求大神指教該怎么做啊 ，急求！！
（模式識(shí)別方面，四個(gè)連續(xù)相等的數(shù)）編寫下面的方法，測(cè)試某個(gè)數(shù)組中是否有四個(gè)連續(xù)的值相同的數(shù)字rn publicBoolean isConsecutiveFour(int[] values)rn編寫測(cè)試程序，提示用戶輸入一個(gè)整數(shù)數(shù)列，如果這個(gè)數(shù)列有四個(gè)連續(xù)的具有相同值的數(shù)，那就顯示true，否則顯示false。代碼如下……
參數(shù)跟返回值你可以自己添加咯！
Scanner qvod = new Scanner(System.in);
String s = qvod.next();
char[] c = new char[s.length()];
boolean b = false;
for (int i = 0; i < c.length; i++) {
c[i]=s.charAt(i);
}
for (int i = 0; i < c.length; i++) {
//防止數(shù)組越界操作
if (c.length>i+3) {
if (c[i]==c[i+1]&&c[i]==c[i+2]&&c[i]==c[i+3]) {
b=true;
}
}
}
if (b) {
System.out.println("TRUE");
} else {
System.out.println("FALSE");
}
-------------------------------------分割完結(jié)線--------------------------
public static void main(String[] args) {
isConsecutiveFour(new int[]{5,2,3,5});//用戶輸入的數(shù)
}
public static Boolean isConsecutiveFour(int[] values){
int[] n=new int[]{5,2,3,5};///指定的數(shù)
if(n.length==values.length){
for(int i=0;i<values.length;i++){
if(n[i]!=values[i]){
System.out.println("false");
return false;
}
}
System.out.println("true");
return true;
}
return null;
}
最粗暴的做法..用for循環(huán)
public boolean isConsecutiveFour(int[] values){
boolean flag = false ;
int i=0 ;
int len = values.length ;
while(!flag&&i<len-1){
if(values[i]==values[i+1]){
if((i+2<len)&&values[i+1]==values[i+2]){
if((i+3<len)&&values[i+2]==values[i+3]){
flag = true ;
}
}
}
i++ ;
}
return flag ;
}
一道java編程題，看不懂什么意思，求指教！
用Java類表示平面解析幾何上的基本圖形線段(Line)和矩形(Rectangle)，并且這兩個(gè)類都是類Shape的子類。類Shape聲明如下：rnrnpublic class Shape {rnprivate String name;rnrnpublic Shape(){rn}rnpublic Shape(String name){rnthis.name = name;rn}rn}就是叫你定義2個(gè)類 一個(gè)為基本圖形線段(Line) ，一個(gè)為矩形(Rectangle)。這2個(gè)類都要繼承Shape類
public class Line extends Shape{
public Line (String name){
super(name);
}
}
public class Rectangleextends Shape{
public Rectangle(String name){
super(name);
}
}
這個(gè)java類的構(gòu)造器，第一個(gè)是無參構(gòu)造器，不寫的話會(huì)默認(rèn)一個(gè)無參構(gòu)造器，第二個(gè)是帶一個(gè)參數(shù)的構(gòu)造器。構(gòu)造器是用來創(chuàng)建java類的時(shí)候調(diào)用的
類Shape 是一個(gè)帶參數(shù)的構(gòu)造方法和一個(gè)不帶參數(shù)的構(gòu)造方法，基本圖形線段(Line)和矩形(Rectangle)這兩個(gè)繼承它，肯定是用到了類Shape里面不同的方法唄
這個(gè)Shape類是一個(gè)父類，里面定義了一個(gè)類屬性，和兩個(gè)構(gòu)造函數(shù)。Line和Rectangle繼承Shape這個(gè)父類
我也不知道
我也看不懂你的意思
求一道Java編程題！！！
求一道Java編程題！！！編寫一個(gè)抽象類Person，內(nèi)有變量姓名name，年齡age，性別sex，有構(gòu)造方法。定義一個(gè)接口Jiekou，接口中有常量國籍country和顯示成員變量的printinfo()方法。定義Person類的子類Student，增加變量學(xué)校school、專業(yè)zhuanye；定義Person類的子類Teacher，增加變量學(xué)校school、職稱zhicheng、主講課程teach。類Student和Teacher都使用了該接口。寫出一個(gè)主類，測(cè)試上述類的正確性，測(cè)試時(shí)使用上轉(zhuǎn)型對(duì)象和接口回調(diào)技術(shù)來體現(xiàn)多態(tài)性--接口
public interface DisplayPeople {
public final String country="China";
void printInfo(Person p);
}
--抽線類
public abstract class Person implements DisplayPeople{
private String name;
private int age;
private String sex;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public Person(){}
public Person(String name, int age, String sex) {
this();
this.name = name;
this.age = age;
this.sex = sex;
}
}
--Student類
public class Student extends Person implements DisplayPeople{
private String school;
private String profession;
public Student(String school, String profession) {
super();
this.school = school;
this.profession = profession;
}
public Student() {
}
@Override
public void printInfo(Person p) {
// TODO Auto-generated method stub
System.out.println("country:"+DisplayPeople.country+";name:"+p.getName()+";age:"+p.getAge()+";sex:"+p.getSex()+";school:"+this.getSchool()+";profession:"+this.getProfession());
}
public String getSchool() {
return school;
}
public void setSchool(String school) {
this.school = school;
}
public String getProfession() {
return profession;
}
public void setProfession(String profession) {
this.profession = profession;
}
}
--Teacher類
public class Teacher extends Person implements DisplayPeople{
private String school;
private String zhicheng;
private String teach;
public String getSchool() {
return school;
}
public void setSchool(String school) {
this.school = school;
}
public String getZhicheng() {
return zhicheng;
}
public void setZhicheng(String zhicheng) {
this.zhicheng = zhicheng;
}
public String getTeach() {
return teach;
}
public void setTeach(String teach) {
this.teach = teach;
}
@Override
public void printInfo(Person p) {
System.out.println("country:"+DisplayPeople.country+";name:"+p.getName()+";age:"+p.getAge()+";sex:"+p.getSex()+";school:"+this.getSchool()+";zhicheng:"+this.getZhicheng()+";teach:"+this.getTeach());
}
}
--測(cè)試類
public class Client {
public static void main(String[] args) {
Student student=new Student();
student.setAge(20);
student.setName("John");
student.setSex("Male");
student.setProfession("couputer");
student.setSchool("Beijingdaxue");
Person p=student;
p.printInfo(p);
Teacher tea=new Teacher();
tea.setAge(25);
tea.setName("Mary");
tea.setSex("Female");
tea.setTeach("English");
tea.setSchool("Beijingdaxue");
Person p1=tea;
p.printInfo(p1);
}
}
public class Test {// 測(cè)試類
public static void main(String[] args) throws IOException {
Student s = new Student("zhangsna",12,"nan","默默大學(xué)","機(jī)械專業(yè)");
Teacher t = new Teacher("lili",30,"nv","默默大學(xué)","教授","機(jī)械");
s.showInfo();
t.showInfo();
}
}
class People{
String name;
int age;
String sex;
public People(String name, int age, String sex) {
super();
this.name = name;
this.age = age;
this.sex = sex;
}
}
interface JieKou{
final String COUNTRY="china";
public void showInfo();
}
class Student extends People implements JieKou{
private String school;
private String zhuanye;
@Override
public void showInfo() {
System.out.println("姓名："+name+"\t年齡:"+age+"性別:"+sex+"學(xué)校："+school+",專業(yè)："+zhuanye);
}
public Student(String name, int age, String sex, String school, String zhuanye) {
super(name, age, sex);
this.school = school;
this.zhuanye = zhuanye;
}
}
class Teacher extends People implements JieKou{
private String school;
private String zhicheng;
private String teach;
@Override
public void showInfo() {
System.out.println("姓名："+name+"\t年齡:"+age+"性別:"+sex+"學(xué)校："+school+",職稱："+zhicheng+",主講課程："+teach);
}
public Teacher(String name, int age, String sex, String school, String zhicheng, String teach) {
super(name, age, sex);
this.school = school;
this.zhicheng = zhicheng;
this.teach = teach;
}
}
就這些
請(qǐng)問大家一道JAVA編程題目求大神幫助
創(chuàng)建一個(gè)類Point，包含兩個(gè)成員變量x、y分別表示x和y坐標(biāo)，兩個(gè)構(gòu)造器Point()和Point(x0,y0)，以及一個(gè)movePoint(int dx,int dy)方法來實(shí)現(xiàn)點(diǎn)的位置移動(dòng)。編寫一個(gè)可運(yùn)行類PointDemo，在main方法中創(chuàng)建兩個(gè)Point類的對(duì)象p1和P2，要求分別用不同的構(gòu)造方法創(chuàng)建。在p1和P2對(duì)象中分別調(diào)用movePoint方法后，打印x和y的值。class Point { int x,y; public Point() { x=0; y=0; } public Point(int x,int y) { this.x=x; this.y=y; } public void movePoint(int dx,int dy) { x+=dx; y+=dy; } } public class PointDemo { public static void main(String[] args) { Point p1=new Point(); Point P2=new Point(8,9); p1.movePoint(4, 5); System.out.println("對(duì)象p1中的x，y移動(dòng)后的值分別為：x="+p1.x+"\t"+"y="+p1.y); P2.movePoint(5, 6); System.out.println("對(duì)象P2中的x，y移動(dòng)后的值分別為：x="+P2.x+"\t"+"y="+P2.y); } } 呵呵，大概就是上面的了
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