Java BTree designed to store DNA sequences.

binary file

[Metadata] 8xb Degree 8xb Root (Byte offset) 4xb Number of nodes

[Node] 8xb Key 4xb Number of Keys 1xb # isLeaf ?xb Nodes ?xb Child Keys (Byte offsets)

[Key] 1xb Sequence Length 8xb Sequence 4xb Frequency

[Child Key] 8xb Key (Byte offset)