[JAVA] 백준 10814 : 나이 순 정렬하기

Person클래스를 만들어 데이터를 저장하고 해당 데이터의 나이를 기준으로 정렬했다

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import java.util.StringTokenizer;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st;
        ArrayList<Person> temp = new ArrayList<>();

        int count = Integer.parseInt(br.readLine());

        for (int i = 0; i < count; i++) {
            st = new StringTokenizer(br.readLine());
            int age = Integer.parseInt(st.nextToken());
            String name = st.nextToken();
            temp.add(new Person(age, name));
        }

        Person[] person = temp.toArray(new Person[0]);

        Arrays.sort(person, new Comparator<Person>() {
            @Override
            public int compare(Person o1, Person o2) {
                return o1.age - o2.age;
            }
        });

        for (Person human : person) {
            bw.write(human.age + " " + human.name);
            bw.newLine();
        }

        bw.flush();
        bw.close();
        br.close();
    }
}

class Person {
    int age;
    String name;

    Person(int age, String name) {
        this.age = age;
        this.name = name;
    }
}