Revert "Add files via upload"

[masternobelphysics]

Reverts #2
I contributed

#1 Shortest-distance-between-2-nodes

n1 and n2 using one traversal

class Node:
def init(self, data):
self.data = data
self.right = None
self.left = None

def pathToNode(root, path, k):

# base case handling
if root is None:
	return False

# append the node value in path
path.append(root.data)

# See if the k is same as root's data
if root.data == k :
	return True

# Check if k is found in left or right
# sub-tree
if ((root.left != None and pathToNode(root.left, path, k)) or
		(root.right!= None and pathToNode(root.right, path, k))):
	return True

# If not present in subtree rooted with root,
# remove root from path and return False
path.pop()
return False

def distance(root, data1, data2):
if root:
# store path corresponding to node: data1
path1 = []
pathToNode(root, path1, data1)

	# store path corresponding to node: data2
	path2 = []
	pathToNode(root, path2, data2)

	# iterate through the paths to find the
	# common path length
	i=0
	while i<len(path1) and i<len(path2):
		# get out as soon as the path differs
		# or any path's length get exhausted
		if path1[i] != path2[i]:
			break
		i = i+1

	# get the path length by deducting the
	# intersecting path length (or till LCA)
	return (len(path1)+len(path2)-2*i)
else:
	return 0

Driver Code to test above functions

root = Node(1)
root.left = Node(2)
root.right = Node(3)
root.left.left = Node(4)
root.right.right= Node(7)
root.right.left = Node(6)
root.left.right = Node(5)
root.right.left.right = Node(8)

dist = distance(root, 4, 5)
print "Distance between node {} & {}: {}".format(4, 5, dist)

dist = distance(root, 4, 6)
print "Distance between node {} & {}: {}".format(4, 6, dist)

dist = distance(root, 3, 4)
print "Distance between node {} & {}: {}".format(3, 4, dist)

dist = distance(root, 2, 4)
print "Distance between node {} & {}: {}".format(2, 4, dist)

dist = distance(root, 8, 5)
print "Distance between node {} & {}: {}".format(8, 5, dist)

[masternobelphysics]

code in python
accept please