def insertBeg(self,data):
temp = Node(data)
temp.next = self.head
self.head = temp
if self.head.next == None:
self.tail = self.head
return self.head
def insertBeg(self, data):
temp = Node(data)
temp.next = self.head
self.head = temp
if self.head.next == None:
self.tail = self.head
return self.head
def insert(self, value):
temp = self.head
x = Node(value)
x.prev = temp
self.head = x
if self.tail == None:
self.tail = x
else:
temp.next = x
def insert(self,value):
temp = self.head
x = Node(value)
x.prev = temp
self.head = x
if self.tail == None:
self.tail = x
else:
temp.next = x
def insertAtPos(self, data, pos):
temp = Node(data)
count = 1
curr = self.head
while count < pos - 1:
curr = curr.next
count += 1
storeNext = curr.next
curr.next = temp
temp.next = storeNext
def push_back(self, value):
newnode = Node(value)
temp = self.back
newnode.next = temp
if self.back == None:
self.front = newnode
self.back = newnode
else:
self.back.prev = newnode
self.back = newnode
def push_back(self,value):
newnode = Node(value)
temp = self.back
newnode.next = temp
if self.back == None:
self.front = newnode
self.back = newnode
else:
self.back.prev = newnode
self.back = newnode
def insertAtPos(self,data,pos):
temp = Node(data)
count = 1
curr = self.head
while count < pos-1:
curr = curr.next
count += 1
storeNext=curr.next
curr.next = temp
temp.next = storeNext
def getBtree(start,end,arr):
if start>end:
return [None]
trees = []
for i in range(start,end+1):
getL = getBtree(start,i-1,arr)
getR = getBtree(i+1,end,arr)
for j in getL:
for k in getR:
root = Node(arr[i])
root.left = j
root.right = k
trees.append(root)
return trees
def merge(head, mid):
if head == None:
return mid
if mid == None:
return head
curr = Node()
temp = curr
while head != None and mid != None:
if head.value <= mid.value:
temp.next = head
head = head.next
else:
temp.next = mid
mid = mid.next
temp = temp.next
if head == None and mid != None:
temp.next = mid
else:
temp.next = head
return curr.next
def insertEnd(self, data):
temp = Node(data)
temp.next = None
self.tail.next = temp
self.tail = temp
return self.tail
def insertEnd(self,data):
temp = Node(data)
temp.next = None
self.tail.next = temp
self.tail = temp
return self.tail
