149 - 教师类-2

149 - 教师类-2

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

Description

修改题目143
1. 修改教师类，使得由多个Teacher对象所形成的数组可以排序（编号由低到高排序），并在main函数中使用Arrays.sort(Object[] a)方法排序
2. 定义一个类TeacherManagement，包含教师数组，提供方法add(Teacher[])，使其可以添加教师，提供重载方法search，方法可以在一组给定的教师中，根据姓名或年龄返回等于指定姓名或年龄的教师的字符串信息，信息格式为：“no: **, name:**, age: **, seminary: **”。如果没有满足条件的教师，则返回“no such teacher”。

Input

教师个数
教师信息
待查找教师的姓名
待查找教师的年龄

Output

排序后的信息
按姓名查找的老师信息
按年龄查找的老师信息

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{
    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;
    }
    // 重载
    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");
        }
    }


}