first commit
before fixing some issues
Fix the bug
add more tests for testInsert()
add search() method
add null and empty check in insert()
fix a bug on search() method. testSearch() pass but testSearch() failes. Size of searchKey and key in nodes looks matter
fix bugs on search() method and getDiffAtFrom() methods
add parent,left and right pointers to be copied
add searchPrefix() method
add printInOrder() method
remove System.println() call
comment out log.debug() call