백준 2751 수 정렬하기 2 자바

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
public class Main{
    public static void main(String[] args){
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
			int n = Integer.parseInt(br.readLine());

			ArrayList<Integer> arr = new ArrayList<Integer>();
			for (int i = 0; i < n; i++) {
				arr.add(Integer.parseInt(br.readLine()));
			}

			Collections.sort(arr);

			for (int i = 0; i < n; i++) {
				System.out.println(arr.get(i));
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
    }
}