백준 10989번

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
import java.util.Arrays;

public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

int count = Integer.parseInt(br.readLine());

int[] numbers = new int[count];


for (int i = 0; i< count; i++)
  {
    numbers[i] = Integer.parseInt(br.readLine());
  }


Arrays.sort(numbers);

StringBuilder sb = new StringBuilder();

for (int i = 0; i< count; i++){
  sb.append(numbers[i]).append("\n");
}

System.out.println(sb);

}
}

BufferedReader와 StringBuilder를 연습하는 좋은 문제였다.