P1181_단어정렬_Comparator.java

package net.acmicpc.정렬;

import java.util.*;

/**
 * 단어 정렬
 * <p>
 * Comparator
 */
public class P1181_단어정렬_Comparator {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int testCase = scanner.nextInt();

        Set<String> set = new HashSet<>();
        for (int i = 0; i < testCase; ++i) {
            set.add(scanner.next());
        }

        String[] strArr = new String[set.size()];

        set.toArray(strArr);
        Arrays.sort(strArr);
        Arrays.sort(strArr, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {
                return Integer.compare(o1.length(), o2.length());
            }
        });

        for (String s : strArr) {
            System.out.println(s);
        }
    }
}