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]+" ");
}
}
}
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