Given n nodes. Find the number of different structural
binary trees that can be formed using the nodes.
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Answer / v.suresh kumar
It is possible to form 2^n - 1 binary trees with n nodes.
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Write, efficient code for extracting unique elements from a sorted list of array. e.g. (1, 1, 3, 3, 3, 5, 5, 5, 9, 9, 9, 9) -> (1, 3, 5, 9).
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