Print All The Nodes Which are X distance from the Root

Objective: Given Binary Tree, Print all the nodes which are X distance from the root

Example :

Nodes at X distances from root
Nodes at X distances from root

Appraoch:

  • Idea is very simple.
  • Do the preorder traversal, pass x as parameter.
  • While going down, at each level, keep reducing the x by 1
  • When x = 0 , the means you have reached to the nodes which are at x distance from root, Print them.

Complete Code:

Output:
Nodes at 3 distance from root : 
 6 7 9