Objective: – Find The Distance From Root To Given Node of a binary tree.
What does Distance mean: It means a number of edges between two nodes.
- This problem is similar to “Find Path From Root To Given Node“
- Make the following change to that
- Instead of returning the boolean value return the integer, nodes in the path will return the number = 1 + number returned by the previous node in the path.
- The final return will give you the number of nodes between the root and the given leaf node so the distance will be (edges)= number of nodes -1
Distance from root to 45 is : 3