leafNode
leafNode
leafNode
leafNode
leafNode
leafNode
leafNode
leafNode
innerNode
innerNode
innerNode
innerNode
innerNode
innerNode
根节点
          RightSubtreeHasNotLeafChild
          LeftSubtreeHasNotLeafChild
          LeftSubtreeHasLeafChild
          RightSubtreeHasLeafChild
          RightSubtreeHasNotLeafChild
          LeftSubtreeHasLeafChild
          RightSubtreeHasLeafChild
          LeftBlockFP
          Code
          SplitValue
          LeftNumBytes
根节点的右节点
根节点
根节点的左节点