import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.StringTokenizer;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
List<Member> list = new ArrayList<>();
StringTokenizer st;
for (int i = 0; i < N; i++) {
st = new StringTokenizer(br.readLine());
list.add(new Member(Integer.parseInt(st.nextToken()), st.nextToken()));
}
Collections.sort(list);
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i).getAge() + " " + list.get(i).getName());
}
}
}
class Member implements Comparable<Member> {
private int age;
private String name;
public int getAge() {
return age;
}
public String getName() {
return name;
}
public Member(int age, String name) {
this.age = age;
this.name = name;
}
@Override
public int compareTo(Member m) {
return Integer.compare(this.age, m.age);
}
}
참고용 다른 분 풀이
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.StringTokenizer;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
StringBuilder[] p = new StringBuilder[201];
for(int i = 0; i < p.length; i++) {
p[i] = new StringBuilder();
}
for(int i = 0; i < N; i++) {
StringTokenizer st = new StringTokenizer(br.readLine(), " ");
int age = Integer.parseInt(st.nextToken());
String name = st.nextToken();
p[age].append(age).append(' ').append(name).append('\n');
}
StringBuilder sb = new StringBuilder();
for(StringBuilder val : p) {
sb.append(val);
}
System.out.println(sb);
}
}
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