稳定的婚姻算法java代码

Question

我需要在稳定的婚姻类中实现makeMatches方法。 代码需要遵循此算法：

set each person to be free;
while (some man m with a nonempty preference list is free) {
    w = first woman on m's list;
    if (some man p is engaged to w) {
        set p to be free
    }
    set m and w to be engaged to each other
    for (each successor q of m on w's list) {
        delete w from q's preference list
        delete q from w's preference list
    }
}

但是我找不到我的错误。该计划使夫妇依赖于他们的第一选择，但在此之后不会继续和设定夫妻。 你能看一下我的代码并告诉我它有什么问题吗？

Person.java由讲师提供：

   import java.util.*;

    public class Person {
        public static final int NOBODY = -1;

    private String name;
    private List<Integer> preferences;
    private List<Integer> oldPreferences;
    private int partner;

    public Person(String name) {
        this.name = name;
        preferences = new ArrayList<Integer>();
        oldPreferences = new ArrayList<Integer>();
        erasePartner();
    }

    public void erasePartner() {
        partner = NOBODY;
    }

    public boolean hasPartner() {
        return partner != NOBODY;
    }

    public int getPartner() {
        return partner;
    }

    public void setPartner(int partner) {
        this.partner = partner;
    }

    public String getName() {
        return name;
    }

    public boolean hasChoices() {
        return !preferences.isEmpty();
    }

    public int getFirstChoice() {
        return preferences.get(0);
    }

    public void addChoice(int person) {
        preferences.add(person);
        oldPreferences.add(person);
    }

    public List<Integer> getChoices() {
        return preferences;
    }

    public int getPartnerRank() {
        return oldPreferences.indexOf(partner) + 1;
    }
}

StablaMarriage.java是我需要实现代码的。

  import java.io.*;
  import java.util.*;

  public class StableMarriage {
      public static final String LIST_END = "END";

      public static void main(String[] args) throws FileNotFoundException {
        Scanner console = new Scanner(System.in);
        System.out.print("What is the input file? ");
        String fileName = console.nextLine();
        Scanner input = new Scanner(new File(fileName));
        System.out.println();

        List<Person> men = readHalf(input);
        List<Person> women = readHalf(input);

        makeMatches(men, women);
        writeList(men, women, "Matches for men");
        writeList(women, men, "Matches for women");
    }

    public static Person readPerson(String line) {
        int index = line.indexOf(":");
        Person result = new Person(line.substring(0, index));
        Scanner data = new Scanner(line.substring(index + 1));
        while (data.hasNextInt()) {
            result.addChoice(data.nextInt());
        }
        return result;
    }

    public static List<Person> readHalf(Scanner input) {
        List<Person> result = new ArrayList<Person>();
        String line = input.nextLine();
        while (!line.equals(LIST_END)) {
            result.add(readPerson(line));
            line = input.nextLine();
        }
        return result;
    }

    public static void makeMatches(List<Person> list1, List<Person> list2) {

      for (Person eachMan :  list1){
         eachMan.setPartner(-1);
     }
     for (Person eachWoman : list2){
         eachWoman.setPartner(-1);
     }

    for (Person man : list1){
        for (Person woman : list2){
        while (man.hasChoices() && !man.hasPartner()){
            int choosenWoman = man.getFirstChoice(); 
            for (Person p : list1){
                if (p.getPartner()== choosenWoman){
                     p.setPartner(-1);
                }
            }
            man.setPartner(choosenWoman);
            list2.get(choosenWoman).setPartner(list1.indexOf(man));

           List manList= man.getChoices();
            List womanList = woman.getChoices();
            for (int q= womanList.size()-1; q>=0; q--){
                if(q>womanList.indexOf(list1.indexOf(man)))
                    manList.remove(manList.indexOf(man.getFirstChoice()));
                     womanList.remove(q);


                 }  

        }
        }
    }
    }

    public static void writeList(List<Person> list1,  List<Person> list2,
                                 String title) {
        System.out.println(title);
        System.out.println("Name           Choice  Partner");
        System.out.println("--------------------------------------");
        int sum = 0;
        int count = 0;
        for (Person p : list1) {
            System.out.printf("%-15s", p.getName());
            if (!p.hasPartner()) {
                System.out.println("  --    nobody");
            } else {
                int rank = p.getPartnerRank();
                sum += rank;
                count++;
                System.out.printf("%4d    %s\n", rank,
                                  list2.get(p.getPartner()).getName());
            }
        }
        System.out.println("Mean choice = " + (double) sum / count);
        System.out.println();
    }
}