BOJ1181 단어 정렬

https://www.acmicpc.net/problem/1181

1181번: 단어 정렬

 

 

 

 

import java.io.*;
import java.util.*;
public class Main
{
	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		int n = Integer.valueOf(br.readLine());
		HashSet<String> hashSet = new HashSet();
		
		
		
		for(int i=0;i<n;i++){
		    hashSet.add(br.readLine());
		}
		
		String[] words = new String[hashSet.size()];
		int index=0;
		for(String s : hashSet){
		    words[index++] = s;
		}

		Arrays.sort(words,(s1,s2)->{
		     if(s1.length() == s2.length()){
		            return s1.compareTo(s2);
		        }
		    return s1.length()-s2.length();
		});
		
		for(int i=0;i<hashSet.siz;i++){
            bw.write(words[i]+"\n");
		}
		bw.flush();
	}
}