백준 2751번 수 정렬하기 2

package test;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

public class BaekJoon2751 {

	public static void main(String[] args) throws IOException {
		BufferedReader buf =new BufferedReader(new InputStreamReader(System.in));
		StringBuilder sb =new StringBuilder("");

		int N=Integer.parseInt(buf.readLine());
		List<Integer> list = new ArrayList<>();
		
		for(int i=0;i<N;i++) {
			list.add(Integer.parseInt(buf.readLine()));
		}
		
		Collections.sort(list);
		
		for (int i:list) {
			sb.append(i).append("\n");
		}
		System.out.println(sb);
	}

}