m-khooryani

class Program
{
   static readonly Dictionary<string, long> memoized = new Dictionary<string, long>();
   static void Main(string[] args)
   {
      Console.WriteLine(CountDecode("111"));
   }

   private static long CountDecode(string s)
   {

m-khooryani

class Program
{
    static void Main(string[] args)
    {
        Node node = new Node("root", new Node("left", new Node("left.left"), null), new Node("right"));
        string serializedNode = node.Serialize();
        var deserializedNode = Node.Deserialize(serializedNode);
        if (deserializedNode.Left.Left.Val != "left.left")
        {
            throw new Exception("incorrect!");

m-khooryani

private static long[] ProductArray(int[] inputArray)
{
    int n = inputArray.Length;
    long[] outputArray = new long[n];
    long[] leftToRight = new long[n];
    long[] rightToLeft = new long[n];

    // product left to right
    leftToRight[0] = inputArray[0];
    for (int i = 1; i < n; i++)