def subtree(s, tree):
"""
Returns whether the given post order traversal index sequence represents a subtree or not
:type s: list
:type tree: Node
:return: result
:rtype: bool
"""
first_node_index = s[0]
last_node_index = s[-1]
# Neglecting explicitly the '_' characters
if '_' in s:
return False
# Checking whether the first node is a leaf
is_non_leaf = Node.has_children(tree, first_node_index)
if is_non_leaf == -1:
return False
# Checking the left most descendant of the root of the subtree, is equal to the first node
lmd = Node.lmd_subtree(tree, last_node_index)
if not lmd:
return False
else:
return not is_non_leaf and lmd == first_node_index
def subtree(s, tree):
"""
Returns whether the given post order traversal index sequence represents a subtree or not
:type s: list
:type tree: Node
:return: result
:rtype: bool
"""
first_node_index = s[0]
last_node_index = s[-1]
# Neglecting explicitly the '_' characters
if '_' in s:
return False
# Checking whether the first node is a leaf
is_non_leaf = Node.has_children(tree, first_node_index)
if is_non_leaf == -1:
return False
# Checking the left most descendant of the root of the subtree, is equal to the first node
lmd = Node.lmd_subtree(tree, last_node_index)
if not lmd:
return False
else:
return not is_non_leaf and lmd == first_node_index
def appendNode(self, data):
if self.left == None:
self.left = Node(data)
return True
elif self.right == None:
self.right = Node(data)
return True
elif self.left.appendNode(data):
return True
elif self.right.appendNode(data):
return True
class Node(simple_tree.Node):
def appendNode(self, data):
if self.left == None:
self.left = Node(data)
return True
elif self.right == None:
self.right = Node(data)
return True
elif self.left.appendNode(data):
return True
elif self.right.appendNode(data):
return True
from simple_tree import Node
import compare
A = (
Node("a")
.addkid(Node("b")
.addkid(Node("c")
.addkid(Node("d")
.addkid(Node("m1"))
.addkid(Node("m2")))))
.addkid(Node("e")
.addkid(Node("x")
.addkid(Node("m3")))
.addkid(Node("y")
.addkid(Node("m4"))))
)
B1 = (
Node("a")
.addkid(Node("b")
.addkid(Node("d")
.addkid(Node("m3"))
.addkid(Node("m4"))))
.addkid(Node("e1")
.addkid(Node("x1")
.addkid(Node("m1")))
.addkid(Node("y1")
.addkid(Node("m2"))))
)
def test():
t1 = Node("a").addkid(Node('b').addkid(Node('e')).addkid(
Node('f'))).addkid(Node('c').addkid(Node('g'))).addkid(Node('d'))
t2 = Node('a').addkid(Node('c').addkid(Node('g'))).addkid(
Node('d').addkid(Node('x').addkid(Node('y')).addkid(Node('z'))))
enhanced_distance(['m', '+', '+', '+', 'd', '+', 'd', 'm', '+', 'x'], [
0, 0.05555555555555555, 0.05555555555555555, 0.05555555555555555, 0.2,
0.4, 3.0, 0, 0.5, 0
])