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: Number of Trees ( 1383 )
Number of Trees
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January 18, 2008, 05:47:56 PM From
thequark
»
Number of Trees
This is more of an algorithms and mathematics question.
Given a positive number N, calculate the number of binary search trees which will have N nodes in them.
The count is on the basis that two trees are considered equal if their _structure_ is same (Each node has the same number of left and right tree). So the data in the nodes doesn't matter.
The best approach would be to find out a mathematical formula for the same, yet this can be achieved by recursion also.
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