Python/data_structures/linked_list/from_sequence.py
Christian Clauss 5df8aec66c
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@poyea Your review please.

* fixup! Format Python code with psf/black push
2019-11-14 19:59:43 +01:00

45 lines
1.2 KiB
Python

# Recursive Prorgam to create a Linked List from a sequence and
# print a string representation of it.
class Node:
def __init__(self, data=None):
self.data = data
self.next = None
def __repr__(self):
"""Returns a visual representation of the node and all its following nodes."""
string_rep = ""
temp = self
while temp:
string_rep += f"<{temp.data}> ---> "
temp = temp.next
string_rep += "<END>"
return string_rep
def make_linked_list(elements_list):
"""Creates a Linked List from the elements of the given sequence
(list/tuple) and returns the head of the Linked List."""
# if elements_list is empty
if not elements_list:
raise Exception("The Elements List is empty")
# Set first element as Head
head = Node(elements_list[0])
current = head
# Loop through elements from position 1
for data in elements_list[1:]:
current.next = Node(data)
current = current.next
return head
list_data = [1, 3, 5, 32, 44, 12, 43]
print(f"List: {list_data}")
print("Creating Linked List from List.")
linked_list = make_linked_list(list_data)
print("Linked List:")
print(linked_list)