Java解 | #HJ31单词倒排#倒置字符串# I like beijing # beijing like I #

Posted 2021-08-03 闭关苦炼内功

单词倒排#倒置字符串# I like beijing # beijing like I

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        while(in.hasNext()){
            StringBuffer sb = new StringBuffer(in.nextLine());
            for(int i = 0;i < sb.length(); i++){
                char c = sb.charAt(i);
                // I like beijing    beijing like I
                if(c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z'){
                // I like beijing.    beijing. like I
                // if(c >= 'A' && c <= 'Z' || c >= 'a' && c <= 'z' || c == '.'){
                    continue;
                }
                sb.replace(i,i+1," ");
            }
            String[] sts = sb.toString().split(" ");
            for(int i=sts.length-1;i>0;i--){
                if(sts[i].equals(" ")){
                    continue;
                }
                System.out.print(sts[i] + " ");
            }
            System.out.println(sts[0]);
        }
    }
}