Boj 10867 중복 빼고 정렬하기

문제 링크 : 백준 https://www.acmicpc.net/problem/10867

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.StringTokenizer;

public class Boj_10867 {

	static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
	static StringTokenizer st;
	static int N;
	static int[] arr;

	public static void main(String[] args) throws NumberFormatException, IOException {

		HashSet<Integer> set = new HashSet<>();

		N = Integer.parseInt(br.readLine());
		st = new StringTokenizer(br.readLine());
		for(int i=0; i<N;i++) {
			set.add(Integer.parseInt(st.nextToken()));
		}
		LinkedList<Integer> list = new LinkedList<>(set);

		Collections.sort(list);

		for(int i:list) {
			System.out.print(i+" ");
		}
	}

}