Binary Tree Inorder Traversal

Binary Tree Inorder Traversal with Introduction, Asymptotic Analysis, Array, Pointer, Structure, Singly Linked List, Doubly Linked List, Circular Linked List, Binary Search, Linear Search, Sorting, Bucket Sort, Comb Sort, Shell Sort, Heap Sort, Merge Sort, Selection Sort, Counting Sort, Stack, Qene, Circular Quene, Graph, Tree, B Tree, B+ Tree, Avl Tree etc.

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In-order traversal

Steps

Traverse the left sub-tree in in-order
Visit the root
Traverse the right sub-tree in in-order

Algorithm

Step 1: Repeat Steps 2 to 4 while TREE != NULL
Step 2: INORDER(TREE -> LEFT)
Step 3: Write TREE -> DATA
Step 4: INORDER(TREE -> RIGHT)
[END OF LOOP]
Step 5: END

C Function

void in-order(struct treenode *tree)
	{
		if(tree != NULL)
		{
			in-order(tree→ left);
			printf("%d",tree→ root);
			in-order(tree→ right);
		}
	}

Example

Traverse the following binary tree by using in-order traversal.

print the left most node of the left sub-tree i.e. 23.
print the root of the left sub-tree i.e. 211.
print the right child i.e. 89.
print the root node of the tree i.e. 18.
Then, move to the right sub-tree of the binary tree and print the left most node i.e. 10.
print the root of the right sub-tree i.e. 20.
print the right child i.e. 32.
hence, the printing sequence will be 23, 211, 89, 18, 10, 20, 32.

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