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As far as i Know, just one.

Do you know any formula to calculate how many binary search trees are possible?

--

answer:

(2n C n) / (n+1) = ( factorial (2n) / factorial (n) * factorial (2n - n) ) / ( n + 1 )

where 'n' is number of element (integer/string)

like:

N Number of BST

1 1

2 2

3 5

4 14

5 42

6 132

and so on

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Wiki User

15y ago
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Wiki User

15y ago

balanced 6:

A(B,C)

A(C,B)

B(A,C)

B(C,A)

C(A,B)

C(B,A)

unbalanced 24:

A(B(C,),)

A(B(,C),)

A(,B(C,))

A(,B(,C))

A(C(B,),)

A(C(,B),)

A(,C(B,))

A(,C(,B))

...

30 total

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Wiki User

12y ago

Try it recursively.

for 1 nodes it is 1.

For 2 distinct nodes it is 4.

For 3 nodes, using combinationaries it is 3*(4+4+2)=30

For 4 nodes it is 4 *(30*2+2*(4*1))=272(required answer)

Here answer is for creating any binary tree with no imposed restriction upon it.

Another answer: Not allowing empty trees, it is four or less. (Allowing empty trees it is infinite.)

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Wiki User

11y ago

Answer is Catalan number i.e 2n!/(n!*(n+1)!) where n is number of nodes.

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Wiki User

13y ago

How many nodes are in a binary tree?

How many binary trees in a node?

Come on think, if this is too hard for you think about changing your courses.

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Wiki User

9y ago

It is 2^4 =16.

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Wiki User

10y ago

14

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Wiki User

12y ago

2n

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Anonymous

Lvl 1
4y ago

12

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Q: How many different binary trees can be made from three nodes?
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There are 8 15 13 14 nodes were there in 4 different trees Which of them could have formed a full binary tree?

In general: There are 2n-1 nodes in a full binary tree. By the method of elimination: Full binary trees contain odd number of nodes. So there cannot be full binary trees with 8 or 14 nodes, so rejected. With 13 nodes you can form a complete binary tree but not a full binary tree. So the correct answer is 15. niraj


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What is the difference between extended binary tree and a binary search tree?

A strictly binary tree is one where every node other than the leaves has exactly 2 child nodes. Such trees are also known as 2-trees or full binary trees. An extended binary tree is a tree that has been transformed into a full binary tree. This transformation is achieved by inserting special "external" nodes such that every "internal" node has exactly two children.


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What is the rule of leaves?

The rule of leaves, also known as the rule of five, states that in a binary tree, the number of internal nodes is always one less than the number of leaves. This relationship helps in understanding the structure and properties of binary trees.


What is the use of binary?

Binary trees are commonly used to implement binary search tree and binary heaps.


What can you tell as a conclusion to binary trees?

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What is binary search in data structure using c?

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