human
What is a code to leaf nodes from Preorder of a Binary Search Tree and the other steps required given the following:
Leaf nodes from Preorder of a Binary Search Tree | Print the leaf node from the given preorder of BST ..
Since rightmost element is always leaf node ..
Driver code"
How can the above be solved in Python?
assistant
#Here is code to leaf nodes from Preorder of a Binary Search Tree and the other steps required.
 def leafNode ( preorder , n ) :
	s = [ ]
	i = 0
	for j in range ( 1 , n ) :
		found = False
		if preorder [ i ] > preorder [ j ] :
			s . append ( preorder [ i ] )
		else :
			while len ( s ) != 0 :
				if preorder [ j ] > s [ - 1 ] :
					s . pop ( - 1 )
					found = True
				else :
					break
		if found :
			print ( preorder [ i ] , end = " ▁ " )
		i += 1
	print ( preorder [ n - 1 ] )
if __name__ == ' _ _ main _ _ ' :
	preorder = [ 890 , 325 , 290 , 530 , 965 ]
	n = len ( preorder )
	leafNode ( preorder , n )