백준10814: 나이순 정렬

문제

https://www.acmicpc.net/problem/10814

문제 풀이

import java.util.*;

public class Main {
    static class Person {
        int age;
        String name;

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

        @Override
        public String toString() {
            return age + " " + name + "\n";
        }
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        Person[] p = new Person[n];

        for (int i = 0; i < n; i++) {
            p[i] = new Person(sc.nextInt(), sc.next());
        }

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

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < n; i++) {
            sb.append(p[i]);
        }
        System.out.println(sb);
    }
}