natix.CompactDS.InvIndexXLBSeq.Access C# (CSharp) Method

        public int Access(int pos)
        {
            var i = this.Perm.Inverse (pos);
            var _rank0 = i + 1;
            var _pos = this.Lens.Select0 (_rank0);
            var _rank1 = _pos + 1 - _rank0;
            return _rank1 - 1;
        }