牛客网：NC85 拼接所有的字符串产生字典序最小的字符串

import java.util.Arrays;
import java.util.stream.Collectors;



public class Solution {
    public static void main(String[] args) {
        Solution solution = new Solution();
        String[] str = {"abc","de", "ab", "aa", "asd", "a", "b", "dfs"};
        System.out.println(solution.minString(str));
    }

    public String minString (String[] strs) {
        // write code here
        return Arrays.stream(strs).sorted((a, b) -> (a + b).compareTo(b + a)).collect(Collectors.joining());
    }
}