Provide the Next Siblings Pointers in a Given Binary Tree

Objective: – Given a binary tree with three pointers left, right and nextSibling). Write the program to provide the nextsibling pointers.

Example:

Approach:

• Use Recursion.
• Start from the root, if root’s left node is not null then make it point to the root’s right child.
• check if root’s nextsibling is not null, if NOT then make the next sibling of root’s right node point to the root’s nextsibling’s left child. (In our example node 5 points node 6, as per our statement, Parent of node 5 is Node 2, next sibling of node 2 is node 3, and left child of node 2 is node 6, So Node 5 will points to Node 6 )

Code:Run This Code

Run This Code
Output:

1
2 3
4 5 6 7