96年特種考試第一次司法人員考試試題解答

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1 106 年公務人員特種考試警察人員一般警察人員考試及 106 年特種考試交通事業鐵路人員考試試題考試別 : 鐵路人員考試等別 : 員級考試類科 ( 別 ): 資訊處理科目 : 程式設計概要考試時間 :1.5 小時一就下列 Java 程式片斷中加入一個 for 迴圈, 使其印出右側結果 (15 分 ) public class AllNumbers number square cube public static void main( String args) //print a hearder for the table System.out.printf( %s\t%s\t /os\n, number, square, cube ); // 加入一個 for 迴圈 // // //end main int I; for (i=1,i<11,i++) s=i*i; c=i*i*;i system.out printf( i,s,c); 二承題一, 試於 for 迴圈內加入 if 判斷敘述, 以顯示下列結果 :(10 分 ) number square cube for (i=1,i<11,i++) s=i*i; c=i*i*;i x=i %3 if (x==0) system.out 共 6 頁第 1 頁

2 printf( i,s,c); 三下列程式能將輸入的字串 input= abcder, 反向列印為 fedcba 試以遞迴的方式撰寫副程式 stringreversehelper, 且其參數宣告必須與 stringreverse 方法內的呼叫一致 (25 分 ) public class Reverse public static void stringreverse(char stringreversehelper(array,0); System.out.println(); //stringreversehelper 副程式的效置處 public static void main(string args ) String input= abcdef ; stringreverse(input.tochararray()); //end main //end class Reverse import java.util.scanner; array public class Reverse public static void main(string[] args) Scanner sc = new Scanner(System.in); String s; s = sc.nextline(); StringBuffer sb = new StringBuffer(); sb.append(s); sb.reverse(); System.out.println(sb); 四下列網頁接 button 鍵前後瀏覽器顯示的結果為何? (10 分 ) <!DOCTYPE html> <html> <body> <h2>what Can JavaScript Do?</h2> <pid= demo >JavaScript can change HTML content. </p> <button type= button > Onclick= document.getelementbyld( demo ).innerhtml= Hello JavaScript! >Click Me!</button> </body> </html> 共 6 頁第 2 頁

3 擬答 : 按 botton 前 What Can Javascript Do? 按 botton 後 Hello JavaScript! 五根據下列程式回答問題 : Employee.HourlyEmployee,SalariedEmployee 三個類別的關係為何? (5 分 ) 指出一個建構子, 並說明它的作用 (5 分 ) 試說明 Sa1ariedEmployee 中 super(n) 的作用. (5 分 ) 試指出多型 (polymorphism) 出現的地方 (5 分 ) 執行 PayrollSystemTest 後印出的結果為何? (10 分 ) public abstract class Employee private String name; public Employee(String n) name=n; public void setname(string str) name=str; public String getname() return name; public String tostring() return String. Format( %s,getname()); public abstract double earnings(); public class HourlyEmployee extends Employee private double wage;//wae per hour private double hours;//hours worked for week public HourlyEmployee(String n,double hourlywage,double hoursworked) super(n); setwage(hourlywage); sethours(hoursworked); public void setwage(double hourlywage) 共 6 頁第 3 頁

4 if(hourlywage>=0.0) wage=hourlywage; thorw new lllegalargumentexception( Hourly wage must be>=0.0 ); public double getwage() return wage; public void sethours(double hours Worked) if (hoursworked>=0.0)&&(hoursworked<=168.0)) hours=hoursworked; throw new llegalargumentexception( Hours worked must be>=0.0and<=168.0 ); public double gethours() return hours; public double earnings() if(gethours()<=40)//no overtime eturn getwage()*gethours(); return 40*getWage()+(getHours()-40)*getWage()*1.5; public String to String() return String.format( hourly employee;%s\n%s;$%,2f,%s:%s,2f, public class Salarieds Employee super,tostring(), hourly wage,getwage(), hours worked,gethours()); private double weeklysalary, public SalariedEmployee(Stringn,double salary) subper(n); setweedlysalary(salary); public void setweeklysalary(double salary) if(salary>=0.0) weeklysalary=salary; throw new lllegalargumentexeption( Weekly salary must be>=0.0 ); 共 6 頁第 4 頁 public double getweeklysalary()

5 return weeklysalary; public double earnings() return get WeeklySalary(); //end method earnings public String to String() return String format( salaried employee;%s\n%s:$%,2f super,tostring(, weekly salary,getweeklysalary()); //end method tostring //end class SalariedEmployee public class PayrollSystemTest public static void mail(string //create subelass objects args) SalariedEmployee salariedemployee=new SalariedEmployee( Smith,800.00); HourlyEmployee hourlyemployee=new HourlyEmployee( Price,16.75,40); System.out.printly( Employees processed individually\n ) System.out.print(%sn%s,2fnn ) salariedemployee,earned,carned,salariedemployee,earnings()); system.out.pringf(%sn%s:$%,2fnn,hourlyemployee, earned hourlyemployee.earnings()); Employee employees=new Employee 2 ; employees 0 =salariedemployee; employees 1 =hourlyemployee; for(employee currentemployee:employess) System.out.println(currentEmployee); System.out.printf( earned$%,2f\n\n,currentemplyee.earnings()); //end for //end class PayrollSystemTest Employee (string n) 在計算字串長度 Salaried employee super(n) 在計算每週工作小時出現在 Public class HourlyEmployee extends Emploee 這個物件 PayrollSystem Test 印出 Smith earned:800 共 6 頁第 5 頁

6 Price Earned:$ 六說明瀏覽器開啟下列網頁後顯示的訊息與可能的互動 (10 分 ) <!DOCTYPE html> <html> <body> <p>creating a JavaScript Object.</p> <pid= demo ></p> <p>show something.</p> <script> Var person= firstname; John,lastName; Doe,age:50,eyeColor. blue ; Window.alert(person.firstName+ is person.age+ years old. ); </script> </body> </html> John is 50 years old 共 6 頁第 6 頁

使用 Java 语言模拟保险箱容量门板厚度箱体厚度属性锁具类型开保险箱关保险箱动作存取款

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