Question: Modify the TreeMap implementation to support location-aware entries. Provide methods firstEntry( ), lastEntry( ), findEntry(k), before(e), after(e), and remove(e), with all but the last of

Modify the TreeMap implementation to support location-aware entries. Provide methods firstEntry( ), lastEntry( ), findEntry(k), before(e), after(e), and remove(e), with all but the last of these returning an Entry instance, and the latter three accepting an Entry e as a parameter.

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