题解 | #参数解析#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) {
            String str = in.nextLine();
            List<String> res = new ArrayList<>();
            StringBuilder stringBuilder = new StringBuilder();
            int pan = 1;
            for(char b:str.toCharArray()){
                if(b=='"')pan++;
                if(pan%2==0&&b!='"'){
                    stringBuilder.append(b);
                }else if(pan%2!=0&&b=='"'){
                    res.add(String.valueOf(stringBuilder));
                    stringBuilder.setLength(0);
                }else if(b!=' '&&b!='"'){
                    stringBuilder.append(b);
                }else if(b==' '){
                    res.add(String.valueOf(stringBuilder));
                    stringBuilder.setLength(0);
                }
            }
            if(stringBuilder.length()!=0) res.add(String.valueOf(stringBuilder));//最后一个没有放进list
            while(res.contains("")){
                res.remove("");
            }//双引号之后会有个空格，会放入一个0长度的字符串
            System.out.println(res.size());
            for(String b:res){
                System.out.println(b);
            }
        }
    }
}