Print nodes in top view of binary tree

Printing of the top view of given tree that is one of the challenging problem of tree. We can solve this problem in many ways. Let see the possibility to print top view of tree.

First possibility : Get the head node of tree and print that element. After that if head node left subtree are exist then print top element of that nodes from top to bottom. Similar way if exist root node right subtree then print that elements form bottom to top.

In this example {1} is root element and {2 4 7} is left sub tree top view elements and {3 6 10} is top elements of right subtree. We can solve this problem by using recursion.

Here given code implementation process.

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