我的方法無法正常工作

Question

我正在開發一個程序，該程序可以全天分配人員執行任務。

8個小時以來，我一直在努力找出方法的問題。 它應該使用一個名稱列表，一個任務列表和一個24小時計數器，並在X個小時將每個人分配給一個任務。如果該任務需要一個以上的人員，它也會嘗試分配下一個（如果沒有任何條件可以阻止該人被指派執行任務。

在分配了列表中的所有人員之后，程序應重置要分配的人員列表，然后重新開始分配他們。

當我運行代碼時，只有1輪分配，表的其余部分留為空白。

我試圖弄清楚邏輯上有什么問題，但我只是做不到，這太令人沮喪了！ 所以請在這里幫助我！

編碼：

public string[,] AssignPersonsToMission()
{
    bool containCondition; // any item of Person.Conditions is in mission.Conditions?
    int assignedCounter = 0; // how many people assigned to a mission at given hour
    string[,] table = new string[missions.Count, 24]; // columns = missions, rows = hour of day
    List<Person> personsToAssign = persons; // filling list with people to assign
    List<Person> assignedPersons = new List<Person>(); // a list of people that have been assigned

    for (int mission = 0; mission < missions.Count; mission++) //go throught columns
    {
        for (int hour = 0; hour < 24; hour++) //go through rows
        {
            if (personsToAssign.Count == 0) //if all the people have been assigned to missions
            {
                personsToAssign = persons; // refill personsToAssign list with original list of people
                assignedPersons.Clear(); // reset assigned Persons list
            } 
            assignedCounter = 0; // reset assignedCounter
            foreach (Person person in personsToAssign.ToList()) //go through each person that can be assigned
            {
                containCondition = missions[mission].Conditions.Intersect(person.Conditions).Any(); // is there any condition in mission that the person has? 
                                                                                                    //if yes - that person cannot be assigned to the mission
                if (!containCondition)
                {
                    table[mission, hour] += person.Name + "|"; //put person in mission at a given hour
                    assignedPersons.Add(person); //add the person to a list of assigned people
                    personsToAssign.Remove(person);//remove the person from the list of people to assign
                    assignedCounter++;//increament how many people assigned to this mission at this hour

                    if (assignedCounter < missions[mission].NumOfPeople) //if not enough people have been assigned to the mission
                    {
                        continue; //go to the next person to assign
                    }
                    else { break; }//go the the next hour

                }// END OF if (!containCondition)

            }//END OF foreach (Person person in personsToAssign.ToList())

        }//END OF  for (int hour = 0; hour < 24; hour++)


    }//END OF for (int mission = 0; mission < missions.Count; mission++)

    return table;
}

Answer 1

問題是您要更改原始列表persons

更改此：

List<Person> personsToAssign = persons;

至：

List<Person> personsToAssign = new List<Person> (persons);

您不是在復制列表，而是對其設置引用。 因此，如果您從personsToAssign刪除一個人，由於兩個變量都指向內存中的同一列表，因此您也將其從persons刪除。