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# Trees Questions

Home > Technical Aptitude > Data Structures > Trees > General Questions
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Choose the correct option.

What are the number of nodes of left and right sub-tree of the binary tree if the data is inserted in the following order:\r\n 45, 15, 8, 5 6, 5, 65, 47, 12, 18, 10, 73, 50, 16, 61

A7 6

B6 7

C8 5

D5 8

Answer: Option A

Explanation:

5 8

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Consider the following code segment in C to traverse a binary tree using the preorder

typedef struct tree {
int info;
struct  *left;
struct  *right;
}node;

void preorder(node *tree)
{
if (t)
{
Statementl
Statement2
Statement3
}
}
The above Statements should be

Apreorder(tree->right); preorder(tree->left); printf("%d", tree->info);

Bpreorder(tree->left); preorder(tree->right); printf("%d", tree->info);

Cpreorder(tree->left); printf("%d", tree->info); preorder(tree->right);

Dprintf("%d", tree->info); preorder(tree->left); preorder(tree->right);

Answer: Option D

Explanation:

A

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The worst case time complexity of AVL tree is better in comparison to binary search tree for

ASearch and Insert Operations

BSearch and Delete Operations

CInsert and Delete Operations

DSearch, Insert and Delete Operations

Answer: Option D

Explanation:

Search is O(log N) since AVL trees are always balanced. Insertion and deletions are also O(logn) where as in case of BST it is O(n).

Workspace

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241
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A full binary tree with 2n+1 nodes contain

An leaf nodes

Bn non-leaf nodes

C(n-1) leaf nodes

D(n-1) non-leaf nodes

Answer: Option B

Explanation:

Here is no explanation for this answer

Workspace

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If a node in a BST has two children, then its inorder predecessor has

Ano left child

Bno right child

Ctwo children

Dno child

Answer: Option B

Explanation:

Here is no explanation for this answer

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A binary tree in which if all its levels except possibly the last, have the maximum number of nodes and all the nodes at the last level appear as far left as possible, is known as

Afull binary tree.

BAVL tree.

Cthreaded tree.

Dcomplete binary tree.

Answer: Option A

Explanation:

Option A is full binary tree while

Option D should be correct as the given statement matches the definition"A complete binary tree is a binary tree in which all the levels are completely filled except possibly the lowest one, which is filled from the left. A complete binary tree is just like a full binary tree, but with two major differences. All the leaf elements must lean towards the left."

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A full binary tree with n leaves contains

An nodes.

B(log2 n)nodes.

C(2n-1) nodes.

D2^n nodes.

Answer: Option C

Explanation:

Here is no explanation for this answer

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872
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The number of different directed trees with 3 nodes are

A2

B4

C3

D5

Answer: Option C

Explanation:

One configuration for simple Tree with 2 child

One configuration for Left Skew

One configuration for Right Skew

Workspace

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229
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One can convert a binary tree into its mirror image by traversing it in

Ainorder

Bpreorder

Cpostorder

Dany orde

Answer: Option C

Explanation:

Here is no explanation for this answer

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328
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The number of leaf nodes in a complete binary tree of depth d is

A2^d

B[2^(d-1)]+1

C[2^(d+1)]+1

D(2^d)+1

Answer: Option A

Explanation:

Here is no explanation for this answer

Workspace

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