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Update 3_linked_list.py #53

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Update 3_linked_list.py #53

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20 changes: 11 additions & 9 deletions data_structures/3_LinkedList/3_linked_list.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,19 +29,21 @@ def get_length(self):

def insert_at_begining(self, data):
node = Node(data, self.head)

if self.head is None:
self.head = node
self.tail = node
return
node.next = self.head
self.head = node

def insert_at_end(self, data):
if self.head is None:
self.head = Node(data, None)
return

itr = self.head

while itr.next:
itr = itr.next

itr.next = Node(data, None)
self.insert_at_begining(data)
return
node = Node(data)
self.tail.next = node
self.tail = node

def insert_at(self, index, data):
if index<0 or index>self.get_length():
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