参数解析（得到输入参数）

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNext()){
            String a = scanner.nextLine();
            getMaxCommonStr(a);
        }
    }

    private static void getMaxCommonStr(String str){
      int yinCount = 0;
        char[] chars = str.toCharArray();
        List<String> result = new ArrayList<>();
        StringBuilder temp = new StringBuilder();
        for (char c : chars) {
            if(c == ‘"‘){
                if(yinCount == 0){
                    yinCount++;
                }else {
                    yinCount = 0;
                }

            }
            else if(c == ‘ ‘){
                if(yinCount > 0){// 前面有 " 号
                    temp.append(c);
                }else {
                    result.add(temp.toString());
                    temp = new StringBuilder();
                }
            }else {
                temp.append(c);
            }
        }
        result.add(temp.toString());

        System.out.println(result.size());
        for (String s : result) {
            System.out.println(s);
        }
    }


}