题解HJ14 | #字符串排序#

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        Integer num = in.nextInt();

        List<String> list = new ArrayList<>();

        for (int i = 0; i < num; i++) {
            list.add(in.next());
        }

        Collections.sort(list, new Comparator<String>() {
            @Override
            public int compare(String o1, String o2) {

                char[] chars1 = o1.toCharArray();
                char[] chars2 = o2.toCharArray();

                int i = 0;

                while (i < chars1.length && i < chars2.length) {
                    if (chars1[i] != chars2[i]) {
                        return chars1[i] - chars2[i];
                    } else {
                        i++;
                    }
                }

                return chars1.length - chars2.length;
            }
        });

        list.forEach(s -> System.out.println(s));
    }
}

很典型的字典序排序 还有注意next()和nextLine()的区别