AlphabetCheckers.ChainsAlphabet.GetLengthList C# (CSharp) Method

        public ArrayList GetLengthList()
        {
            var list = new SortedList();
            for (int i = 0; i < Cardinality; i++)
            {
                int l = ((BaseChain)this[i]).GetLength();
                if (list.ContainsKey(l))
                {
                    continue;
                }

                list.Add(l, l);
            }

            return new ArrayList(list.Keys);
        }