C# ile kombinasyon hesaplama – 1

public class Combination
{
    List<string> innerArray_ = new List<string>();
 
    public Combination()
    {
        this.DigitCount = 0;
        this.Combinations = 0;
    }
 
    public int DigitCount { get; set; }
 
    public int Combinations { get; set; }
 
    public List<string> GetCombinations()
    {
        if (DigitCount > 0)
        {
            //for (int i = 0; i < this.DigitCount; i++)
            //    GetCombinations(i.ToString(), i);
 
            GetCombinations("", -1);
        }
 
        return this.innerArray_;
    }
 
    public List<string> GetCombinations(int digitcount, int combinations)
    {
        this.DigitCount = digitcount;
        this.Combinations = combinations;
 
        return this.GetCombinations();
    }
 
    /// <summary>
    /// Kombinasyon hesaplamasını yapar
    /// </summary>
    /// <param name="current">Şu anki işlenen veri</param>
    /// <param name="index">İşlenen veri indexi</param>
    private void GetCombinations(string current, int index)
    {
        string tmpcurrent = "";
 
        for (int i = index + 1; i < this.DigitCount; i++)
        {
            tmpcurrent = current + i.ToString();
 
            GetCombinations(tmpcurrent, i);
        }
 
        if (current.Length == this.Combinations)
            this.innerArray_.Add(current);
    }
}

 
Combination com = new Combination();
 
List<string> result = com.GetCombinations(5, 2);