public static void charInt(String chaine){ //1044
String[] charInt = new String[2]
int count = -1
char maxChar = 'A'
int[] letterCount = new int[26]
String word = chaine.toLowerCase()
for (int i=0i<word.length()i++) {
int indexOfChar = (byte)word.charAt(i)-97
letterCount[indexOfChar]++
if (letterCount[indexOfChar]>count || (letterCount[indexOfChar]==count &&word.charAt(i)<maxChar)){
count = letterCount[indexOfChar]
maxChar = word.charAt(i)
}
}
charInt[0] = String.valueOf(maxChar)
charInt[1] = ""+count
System.out.println(charInt[0]+" "+charInt[1])
}
public static void getDate(int n){ //1047 这题如果给1,其实是指2000年1月2号.
n++
int[] getYear = getYear(n)
int year = getYear[0]
int[] getMonth = getMonth(year,getYear[1])
int month = getMonth[0]
String monthString
if(month<10) monthString = "0"+String.valueOf(month)
else monthString = String.valueOf(month)
int day = getMonth[1]
System.out.println(year+"-"+monthString+"-"+day+" "+getDayOfWeek(n))
}
private static boolean isBissextile(int n){
if (n%4==0 &&!(n%100==0&&n%400!=0))
return true
else
return false
}
private static int[] getYear(int n){
int[] getYear = new int[2]
int year = 2000
while(n>0){
if(isBissextile(year)) n -= 366
else n -= 365
if (n>0) year++
}
if(isBissextile(year)) n+=366
else n += 365
getYear[0] = year
getYear[1] = n
return getYear
}
private static int[] getMonth(int year, int n){
int[] getMonth = new int[2]
int month = 1
while(n>0){
if(month<=7 &&month%2 != 0) n -= 31
else if (month==2 &&isBissextile(year) ) n -= 29
else if (month==2 &&!isBissextile(year)) n -= 28
else if(month<=7 &&month%2==0) n -= 30
else if(month%2==0) n-=31
else n -= 30
if (n>0) month++
}
if(month<=7 &&month%2 != 0) n += 31
else if (isBissextile(year) &&month==2) n += 29
else if (!isBissextile(year) &&month==2) n += 28
else if(month<=7 &&month%2==0) n += 30
else if(month%2==0) n+=31
else n += 30
getMonth[0] = month
getMonth[1] = n
return getMonth
}
private static String getDayOfWeek(int n){
int quotient = n/7
int remainder = n -= quotient*7
switch(remainder){
case 0 : return "Sunday"
case 1 : return "Monday"
case 2 : return "Tuesday"
case 3 : return "Wednesday"
case 4 : return "Thursday"
case 5 : return "Friday"
case 6 : return "Saturday"
default : return "Never arrive"
}
}
public static void getCode(String chaine){ //1048
chaine = chaine.toUpperCase()
System.out.println("START")
System.out.println(chaine)
System.out.println("END")
System.out.println()
for(int i=0i<chaine.length()i++){
System.out.print((changChar(chaine.charAt(i))))
}
System.out.println()
}
private static char changChar(char c){
if(c>=65 &&c<=90 &&c-5<65) return (char)(c+26-5)
else if(c>=65 &&c<=90) return (char)(c-5)
else return c
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
JavaExos.charInt("adfadffasdfda")
JavaExos.getDate(1751)
JavaExos.getCode("NS BFW, JAJSYX TK NRUTWYFSHJ FWJ YMJ WJXZQY TK YWNANFQ HFZXJX")
按照题目要求编写的用javaBean规范设计的学生类Student的Java程序如下
需要创建user.java.test包,把Student.java文件和Test.java文件放入包中,编译Student.java文件并且编译运行Test.java文件得到运行结果
Student.java文件代码如下
package user.java.test
import java.io.Serializable
public class Student implements Serializable{
private static final long serialVersionUID = 1L
private String no
private String name
private double score
public Student(){}
public Student(String no,String name,double score){
this.no=no
this.name=name
this.score=score
}
public String getNo(){ return no}
public void setNo(String no){ this.no=no}
public String getName(){ return name}
public void setName(String name){ this.name=name}
public double getScore(){ return score}
public void setScore(double score){ this.score=score}
public String toString(){
return "学号:"+no+",姓名:"+name+",成绩:"+score
}
public static double getAvg(Student[] sArray){
double sum=0,avg
for(int i=0i<sArray.lengthi++){
sum=sum+sArray[i].getScore()
}
avg=sum/sArray.length
return avg
}
}
Test.java文件代码如下
package user.java.test
public class Test{
public static void main(String[] args){
Student[] sArray=new Student[5]
sArray[0]=new Student("001","张三",89.5)
sArray[1]=new Student("002","李四",82.5)
sArray[2]=new Student("003","王五",93)
sArray[3]=new Student("004","赵六",73.5)
sArray[4]=new Student("005","孙七",66)
System.out.println("这些学生的平均分:"+Student.getAvg(sArray))
for(int i=0i<sArray.lengthi++){
System.out.println(sArray[i].toString())
}
}
}
