题解 | #单词逆序#

将输入字符串中的非字母用"-"替换，然后以"-"分割，再逆序输出

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String str = in.nextLine();
        char[] c = new char[str.length()];
        for(int i = 0; i<str.length(); i++){
            if(((int)(str.charAt(i))>=65 && (int)(str.charAt(i))<=90) || ((int)(str.charAt(i))>=97 && (int)(str.charAt(i))<=122)){
                c[i] = str.charAt(i);
            }else{
                c[i] = '-';
            }
        }
        str = str.copyValueOf(c);
        String[] subStr = str.split("-"); 
        for(int i = subStr.length-1; i>=0; i--){
            if(subStr[i] != ""){
                System.out.print(subStr[i]+" ");
            }
        }
      
    }
}