Method add

Tree Data Structure/binarytree.py:16–20

(self, val)

    #to add a new node in tree
    def add(self, val):
        if self.root is None:
            self.root = Node(val)
        else:
            self._add(val, self.root)
            
    # to add elemnts in tree
    def _add(self, val, node):