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AgeSort.java
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AgeSort.java
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package sort;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.StringTokenizer;
class Person implements Comparable<Person>{
int age;
String name;
public Person(int age, String name){
this.age = age;
this.name = name;
}
public int compareTo(Person person){
return age - person.age;
}
@Override
public String toString(){
return age + " " + name;
}
}
public class AgeSort {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
int N;
ArrayList<Person> people = new ArrayList<Person>();
StringTokenizer st;
N = Integer.parseInt(br.readLine());
for (int i = 0; i < N; i++) {
st = new StringTokenizer(br.readLine());
people.add(new Person(Integer.parseInt(st.nextToken()), st.nextToken()));
}
Collections.sort(people);
for (int i = 0; i < N; i++) {
bw.write(people.get(i) + "\n");
}
br.close();
bw.close();
}
}