题解 | #单词倒排#
单词倒排
https://www.nowcoder.com/practice/81544a4989df4109b33c2d65037c5836
利用正则快速得到清理特殊符号后的字符串数组,之后倒序输出即可。
import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.Scanner; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(System.in); String input = sc.nextLine(); String[] arr = input.replaceAll("[^a-zA-Z]+"," ").split(" "); for(int i = arr.length-1; i >= 0; i--){ System.out.print(arr[i]+" "); } } }