Connect Nodes at Same Level
Submissions: 22065   Accuracy:


  Difficulty: Medium   Marks: 4
Associated Course(s):   Interview Preparation

Write a function to connect all the adjacent nodes at the same level in a binary tree. Structure of the given Binary Tree node is like following.


struct Node{

  int data;

  Node* left;

  Node* right;

  Node* nextRight; 


Initially, all the nextRight pointers point to garbage values. Your function should set these pointers to point next right for each node.


Input Tree
      / \
     3   5
    / \   \
   4   1   2

Output Tree
      / \
    / \   \   



The task is to complete the method which takes one argument, root of Binary Tree. There are multiple test cases. For each test case, this method will be called individually.

The function should update nextRight pointers of all nodes.

1 <=T<= 30
1 <=Number of nodes<= 100
1 <=Data of a node<= 1000


3 1 L 3 2 R
10 20 L 10 30 R 20 40 L 20 60 R

3 1 2
1 3 2
10 20 30 40 60
40 20 60 10 30

There are two test casess.  First case represents a tree with 3 nodes and 2 edges where root is 3, left child of 3 is 1 and right child of 3 is 2.   Second test case represents a tree with 4 edges and 5 nodes.

The output contains level order and inorder traversals of the modified tree.  Level order traversal is done using nextRight pointers.


Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.


** For More Input/Output Examples Use 'Expected Output' option **

Contributor: Amit Khandelwal
Author: kartik

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