## How do you traverse a given binary tree in inorder without recursion?

## How do you traverse a given binary tree in inorder without recursion?

1) Create an empty stack S. 2) Initialize current node as root 3) Push the current node to S and set current = current->left until current is NULL 4) If current is NULL and stack is not empty then a) Pop the top item from stack. b) Print the popped item, set current = popped_item->right c) Go to step 3.

**How do you pass a binary tree without recursion?**

in-order:

- Create an empty stack S.
- Initialize current node as root.
- Push the current node to S and set current = current->left until current is NULL.
- If current is NULL and stack is not empty then. -> Pop the top item from stack.
- If current is NULL and stack is empty then we are done.

**Which traversal is used in threaded binary tree?**

Explanation: In threaded binary trees, the null left pointer points to the predecessor and the right null pointer point to the successor. In threaded binary trees, we can use in-order, preorder and postorder traversals to visit every node in the tree.

### What will be inorder traversal for following threaded binary tree?

Inorder traversal of a Binary tree can either be done using recursion or with the use of a auxiliary stack. A binary tree is made threaded by making all right child pointers that would normally be NULL point to the inorder successor of the node (if it exists).

**How do you implement inorder traversal?**

You start traversal from root then goes to the left node, then again goes to the left node until you reach a leaf node. At that point in time, you print the value of the node or mark it visited and moves to right subtree. Continuing the same algorithm until all nodes of the binary tree are visited.

**How do you Recverse a binary tree with recursion?**

Recursive preorder traversal of a binary tree

- First, process the data stored in the root node i.e. process(root->value).
- Then we recursively traverse and process each node in the left subtree by calling the same function with root->left as input parameter i.e. preorder(root->left).

#### In which tree do we avoid the recursive method of traversing a tree?

A Threaded Binary Tree is a binary tree in which every node that does not have a right child has a THREAD (in actual sense, a link) to its INORDER successor. By doing this threading we avoid the recursive method of traversing a Tree, which makes use of stacks and consumes a lot of memory and time.

**What is perfect tree?**

A perfect binary tree is a type of binary tree in which every internal node has exactly two child nodes and all the leaf nodes are at the same level. Perfect Binary Tree. All the internal nodes have a degree of 2.

**What is threaded binary tree with example?**

In computing, a threaded binary tree is a binary tree variant that facilitates traversal in a particular order (often the same order already defined for the tree).

## What is the advantage of threaded binary tree?

Advantages of Thread Binary Tree Non-recursive pre-order, in-order and post-order traversal can be implemented without a stack.

**How is traversal inorder calculated?**

Inorder Traversal: For binary search trees (BST), Inorder Traversal specifies the nodes in non-descending order….Inorder(root)

- Traverse the left sub-tree, (recursively call inorder(root -> left).
- Visit and print the root node.
- Traverse the right sub-tree, (recursively call inorder(root -> right).

**What is inorder transversal?**

(algorithm) Definition: Process all nodes of a tree by recursively processing the left subtree, then processing the root, and finally the right subtree. Also known as symmetric traversal.