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

一、

考試時間 : 1 小時 30 分座號 : 全五頁第一頁注意 : 禁止使用電子計算器不必抄題, 作答時請將試題題號及答案依照順序寫在試卷上, 於本試題上作答者, 不予計分一就下列 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 0 0 0 public static void