public AlphaLayer[] GetAlphaBytes()
 {
     AlphaLayer[] result = new AlphaLayer[validNums.Length];
     for (int layer = 0; layer < validNums.Length; layer++)
     {
         List <byte> bytes = new List <byte>();
         PreorderTraversal((Node node) => {
             if (node.childs != null)
             {
                 byte flag = 0;
                 for (int i = 0; i < 4; i++)
                 {
                     if (node.childs[i].childs == null)
                     {
                         if (node.childs[i].GetValidNum(layer) > 0)
                         {
                             flag |= (byte)(1 << i);
                         }
                     }
                 }
                 bytes.Add(flag);
             }
         });
         result[layer]       = new AlphaLayer();
         result[layer].bytes = bytes;
     }
     return(result);
 }
 public AlphaLayer[] GetAlphaBytes()
 {
     AlphaLayer[] result = new AlphaLayer[validNums.Length];
     for (int layer = 0; layer < validNums.Length; layer++)
     {
         List <short> nums = new List <short>();
         PreorderTraversal((Node node) => {
             if (node.childs == null)
             {
                 nums.Add((short)node.validNums[layer]);
             }
         });
         result[layer]           = new AlphaLayer();
         result[layer].validNums = nums.ToArray();
     }
     return(result);
 }