Abhishek Tiwari abhishekti7

## tree.py
# Node of the tree
class Node:
    def __init__(self, data):
        self.left = None
        self.right = None
        self.value = data

# Tree Class
class Tree:
    def __init__(self, value):
	# Node of the tree
	class Node:
	def __init__(self, data):
	self.left = None
	self.right = None
	self.value = data

	# Tree Class
	class Tree:
	def __init__(self, value):