• Implement an AVL tree stored in a random access file• Each node contains an integer key, one or more fixed length character strings, a left child reference, a right child reference and a height• The format of the file is shown on the next slide• The methods you must implement are shown on the following slides.• Duplicate keys cannot be entered in the tree• Your implementation MUST NOT load the whole tree in memory. Each operation only makes copies of the nodes it needs for that operation. Modified nodes must be written back to the file.• You must create own test driver. I will create my own test driver.Root FreenumOtherFieldsLength1Length2AddrContents

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