职工有职工号，姓名，年龄.输入n个职工的信息，找出3个年龄最小的职工打印出来

输入描述:

输入第一行包括1个整数N，1<=N<=30，代表输入数据的个数。接下来的N行有N个职工的信息：包括职工号(整数)， 姓名(字符串，长度不超过10)， 年龄(1<=age<=100)。

输出描述:

可能有多组测试数据，对于每组数据，输出结果行数为N和3的较小值，分别为年龄最小的职工的信息。关键字顺序：年龄>工号>姓名，从小到大。

输入例子:

5
501 Jack 6
102 Nathon 100
599 Lily 79
923 Lucy 15
814 Mickle 65

输出例子:

501 Jack 6
923 Lucy 15
814 Mickle 65

JAVA实现代码：

（一）

import java.util.*;
class Worker{
    private int age;
    private String name;
    private int workerID;
    public Worker(int workerID,String name,int age){
        this.workerID=workerID;
        this.name=name;
        this.age=age;
    }
    public void setWorkerID(int workerID){
        this.workerID=workerID;
    }
    public int getWorkerID(){
        return workerID;
    }
    public void setName(String name){
        this.name=name;
    }
    public String getName(){
        return name;
    }
    public void setAge(int age){
        this.age=age;
    }
    public int getAge(){
        return age;
    }
}
public class Main{
    public static void main(String args[])
        {
        Scanner in=new Scanner(System.in);
        while(in.hasNext())
            {
            int N=Integer.parseInt(in.nextLine());
            Worker []worker=new Worker[N];
            for(int i=0;i<N;i++)
                {
                String [] str=in.nextLine().split(" ");
                worker[i]=new Worker(Integer.parseInt(str[0]),str[1],Integer.parseInt(str[2]));
            }
            for(int j=0;j<N;j++)
                {
                for(int k=j+1;k<N;k++)
                    {
                    if(worker[j].getAge()>worker[k].getAge())
                        {
                        Worker temp=worker[j];
                        worker[j]=worker[k];
                        worker[k]=temp;
                    }
                }
            }
            for(int p=0;p<3;p++)
                {
                System.out.println(worker[p].getWorkerID()+" "+worker[p].getName()+" "+worker[p].getAge());
            }
        }
    }
}

（二）

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
 
public class Main {
 
    public static void main(String[] args) throws IOException {
 
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = null;
        while ((line = br.readLine()) != null) {
            int N = Integer.parseInt(line);
            String[] info = new String[N];
 
            for (int i = 0; i < N; i++) {
                info[i] = br.readLine();
            }
 
            SortPrint(info, N, Math.min(N, 3));
 
        }
 
    }
 
    private static void SortPrint(String[] info, int n, int count) {
        int[] age = new int[n];
 
        for (int i = 0; i < n; i++) {
            String[] split = info[i].split(" ");
            age[i] = Integer.parseInt(split[split.length - 1]);
        }
 
        while (count > 0) {
 
            int index = 0;
            for (int i = 1; i < n; i++) {
                if (age[index] > age[i] && age[i] < 101 ){
                    index = i;
                }else if (age[index] == age[i] ) {
                     
                    int no1 = Integer.parseInt(info[index].split(" ")[0]);
                    int no2 = Integer.parseInt(info[i].split(" ")[0]);
                    if (no1 > no2) {
                        index = i;
                    }
                }
                 
            }
            age[index] = 101;
            System.out.println(info[index]);
            count--;
        }
 
    }
 
}

（三）

class Info implements Comparable<Info>{
    public int age;
    public int number;
    public String name;
     
    public Info(int number, String name, int age){
        this.age = age;
        this.number = number;
        this.name = name;
    }
        
    @Override
    public int compareTo(Info o){
        if(this.age!= o.age){
            return this.age-o.age;
        }else{
            return this.number-o.number;
        }
    }
}

（四）

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
  
/**
 * 职工有职工号，姓名，年龄.输入n个职工的信息，找出3个年龄最小的职工打印出来。
 */
public class Main {
    public static void main(String[] args) throws IOException {
  
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String line = null;
  
        // 可能有多组测试数据
        while ((line = br.readLine()) != null) {
            //输入第一行包括1个整数N，1<=N<=30，代表输入数据的个数。
            int n = Integer.parseInt(line);
            String[][] data = new String[n][3];
              
            for (int i = 0; i < n; i++) {
                data[i] = br.readLine().split(" ");
            }
              
            sort(data,n);
              
            for (int i = 0; i < 3; i++) {
                System.out.print(data[i][0] + " ");
                System.out.print(data[i][1] + " ");
                System.out.println(data[i][2]);
            }
  
        }
    }
  
    private static void sort(String[][] data,int n) {
        //按年龄排序 选择排序
        String[] temp = new String[3];
          
        for (int i = 0; i < 3 ; i++) {
              
            for (int j = i + 1; j < n; j++) {
                  
                if( data[i][2].length() > data[j][2].length()
                        || (data[i][2].length() == data[j][2].length() && data[i][2].compareTo(data[j][2]) > 0  )) {
                    temp = data[i];
                    data[i] = data[j];
                    data[j] = temp;
                }
            }
        }
    }