/// <summary>
/// 進行排名。
/// </summary>
/// <param name="scoreParser">要被排名的成績計算邏輯。</param>
/// <param name="option">排名選項，接序 or 不接序排名。</param>
/// <param name="placeNamespace">存放排名結果的 Namespace。</param>
public void Rank(IScoreParser <T> scoreParser, PlaceOptions option)
{
//取得有成績的學生。
List <ScoredStudent> students = GetScoredStudents(scoreParser);
//排序名次。
students.Sort(delegate(ScoredStudent x, ScoredStudent y)
{
decimal X = x.Score;
decimal Y = y.Score;
//反過來排，由大到小。
return(Y.CompareTo(X));
});
//決定排序。
IPlaceAlgorithm algorithm = null;
if (option == PlaceOptions.Sequence)
{
algorithm = new Sequence();
}
else
{
algorithm = new Unsequence();
}
int radix = students.Count;
string scorename = scoreParser.Name;
foreach (ScoredStudent each in students)
{
int level = algorithm.NextLevel(each.Score);
T student = _students[each.Id];
PlaceCollection places = GetPlaceCollection(student);
if (places.Contains(scorename))
{
places[scorename] = new Place(level, each.Score, radix);
}
else
{
places.Add(scorename, new Place(level, each.Score, radix));
}
}
}
/// <summary>
/// 進行排名。
/// </summary>
/// <param name="scoreParser">要被排名的成績計算邏輯。</param>
/// <param name="option">排名選項，接序 or 不接序排名。</param>
/// <param name="provider">當相同名次時決定先後成績資料，所有排名範圍內的學生都應該供相同順序與數量的成績資料，否則會產生無法預期的結果。</param>
public void Rank(IScoreParser <T> scoreParser, PlaceOptions option)
{
//取得有成績的學生。
List <ScoredStudent> students = GetScoredStudents(scoreParser);
//沒有成績就不用排名了。
if (students.Count <= 0)
{
return;
}
//排序名次。
students.Sort(delegate(ScoredStudent x, ScoredStudent y)
{
if (scoreParser is IScoresParser <T> )
{
IScoresParser <T> p2 = scoreParser as IScoresParser <T>;
if (x.SecondScores.Count <= 0)
{
x.SecondScores = p2.GetSecondScores(x.Source);
}
if (y.SecondScores.Count <= 0)
{
y.SecondScores = p2.GetSecondScores(y.Source);
}
}
return(y.CompareTo(x));
});
int radix = students.Count; //基數。
string scorename = scoreParser.Name; //排名的名稱。
//先把之前的排名結果清掉。
foreach (T each in this)
{
PlaceCollection places = GetPlaceCollection(each);
if (places.Contains(scorename))
{
places.Remove(scorename);
}
}
//決定排序。
IPlaceAlgorithm placeAlg = null;
if (option == PlaceOptions.Sequence)
{
placeAlg = new Sequence();
}
else
{
placeAlg = new Unsequence();
}
StandardPercentage percenAlg = new StandardPercentage();
percenAlg.Initital(students.Count);
foreach (ScoredStudent each in students)
{
int level = placeAlg.NextLevel(each);
int percen = percenAlg.NextPercentage(level);
T student = _students[each.Id];
PlaceCollection places = GetPlaceCollection(student);
if (places.Contains(scorename))
{
places[scorename] = new Place(level, percen, each.Score, radix, this.Count);
}
else
{
places.Add(scorename, new Place(level, percen, each.Score, radix, this.Count));
}
}
}