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.hasNextLine()) { 
            String s = in.nextLine();
            List<String> list = resolve(s);
            System.out.println(list.size());
            for(String i : list) {
                System.out.println(i);
            }
        }
    }

    public static List<String> resolve(String s) {
        List<String> list = new ArrayList<>();
        boolean open = false;
        StringBuilder b = new StringBuilder();
        int n = s.length();
        for(int i = 0; i < n; i++) {
            if(s.charAt(i) == '\"') {
                if(open) {
                    list.add(b.toString());
                    open = false;
                    b = new StringBuilder();
                    i++;
                } else {
                    open = true;
                }
            } else {
                if(s.charAt(i) == ' ') {
                    if(open) {
                        b.append(s.charAt(i));
                    } else {
                        list.add(b.toString());
                        b = new StringBuilder();
                    }
                } else {
                    b.append(s.charAt(i));
                }
            }
        }
        if(b.length() > 0) {
            list.add(b.toString());
        }
        return list;
    }
}