149 - 教師類-2

Time Limit: 1000   Memory Limit: 65535
Submit: 740  Solved: 270

Description

修改題目143
1. 修改教師類，使得由多個Teacher物件所形成的陣列可以排序（編號由低到高排序），並在main函式中使用Arrays.sort(Object[] a)方法排序
2. 定義一個類TeacherManagement，包含教師陣列，提供方法add(Teacher[])，使其可以新增教師，提供過載方法search，方法可以在一組給定的教師中，根據姓名或年齡返回等於指定姓名或年齡的教師的字串資訊，資訊格式為：“no: **, name:**, age: **, seminary: **”。如果沒有滿足條件的教師，則返回“no such teacher”。
 

Input

教師個數
教師資訊
待查詢教師的姓名
待查詢教師的年齡

Output

排序後的資訊
按姓名查詢的老師資訊
按年齡查詢的老師資訊

Sample Input

4
3 Linda 38 SoftwareEngineering
1 Mindy 27 ComputerScience
4 Cindy 28 SoftwareEngineering
2 Melody 27 ComputerScience
Cindy
27

Sample Output

no: 1, name: Mindy, age: 27, seminary: ComputerScience
no: 2, name: Melody, age: 27, seminary: ComputerScience
no: 3, name: Linda, age: 38, seminary: SoftwareEngineering
no: 4, name: Cindy, age: 28, seminary: SoftwareEngineering
search by name:
no: 4, name: Cindy, age: 28, seminary: SoftwareEngineering
search by age:
no: 1, name: Mindy, age: 27, seminary: ComputerScience
no: 2, name: Melody, age: 27, seminary: ComputerScience
 

import java.util.*;
import java.lang.reflect.Array;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int i;
        int num = scan.nextInt();
        TeacherManagement tm = new TeacherManagement(num);
        Teacher[] t = new Teacher[num];
        for(i=0; i<num; i++){
            int no = scan.nextInt();
            String name = scan.next();
            int age = scan.nextInt();
            String sem = scan.next();
            t[i] = new Teacher(no,name,age,sem);
        }
        tm.add(t);
        Arrays.sort(t);
        for(i=0;i<t.length;i++){
            System.out.println(t[i].toString());
        }
        String s1 = scan.next();
        tm.search(s1);
        int s2 = scan.nextInt();
        tm.search(s2);
    }

}

class Teacher implements Comparable<Teacher>{
    int no;
    String name;
    int age;
    String seminary;

    Teacher(int no, String name, int age, String seminary){
        setNo(no);
        setName(name);
        setSeminary(seminary);
        setAge(age);
    }

    public void setNo(int no) {
        this.no = no;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public void setSeminary(String seminary) {
        this.seminary = seminary;
    }

    public String getName() {
        return name;
    }

    public int getNo() {
        return no;
    }

    public int getAge() {
        return age;
    }

    public String getSeminary() {
        return seminary;
    }
    public boolean equals(Object o){
        if(o == null)
            return false;
        else{
            boolean res = false;
            if(o instanceof Teacher){
                Teacher t = (Teacher)o;
                if(this.no == t.no){
                    res = true;
                }
            }
            return res;
        }
    }

    public String toString(){
        return "no: "+getNo()+", name: "+getName()+", age: "+getAge()+", seminary: "+getSeminary();
    }

    public int compareTo(Teacher t){
        if(this.no == t.no)
            return 0;
        else if(this.no>t.no)
            return 1;
        else
            return -1;
    }
}

class TeacherManagement{
    Teacher[] t;
    int num;

    TeacherManagement(int num){
        this.num = num;
        this.t = new Teacher[num];
    }
    public void add(Teacher[] t){
        this.t = t;
    }
    // 過載
    public void search(int age){
        int flag = 0;
        System.out.println("search by age:");
        for (Teacher aT : t) {
            if (aT.age == age) {
                flag = 1;
                System.out.println(aT.toString());
            }
        }
        if(flag==0){
            System.out.println("no such teacher");
        }
    }
    public void search(String name){
        int flag = 0;
        System.out.println("search by name:");
        for (Teacher aT : t) {
            if (aT.name.equals(name)) {
                flag = 1;
                System.out.println(aT.toString());
            }
        }
        if(flag==0){
            System.out.println("no such teacher");
        }
    }


}