Problem Title
Printing a Binary Tree in Vertical Order.
Problem Description
We will be printing a binary tree in vertical order.
Sample testcase

Output: 4,2,1,5,3,6
Explanation:
As we can see there are 5 vertical lines which can pass through the tree -
1st vertical line - 4
2nd vertical line - 2
3rd vertical line - 1,5
4th vertical line - 3
5th vertical line - 6
Additional Context:
I have a solution for the above problem. Can this be accepted under the data structure folder!