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Commit d927d67

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mindauglMaximSmolskiy
andauthored
Update Linked List from sequence script to use doctests (#12766)
* Update comments for linked list script. * Add doctests for the linked list script. * Update from_sequence.py --------- Co-authored-by: Maxim Smolskiy <mithridatus@mail.ru>
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‎data_structures/linked_list/from_sequence.py

Lines changed: 27 additions & 14 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,7 @@
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# Recursive Program to create a Linked List from a sequence and
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# print a string representation of it.
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"""
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Recursive Program to create a Linked List from a sequence and
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print a string representation of it.
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"""
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class Node:
@@ -18,13 +20,32 @@ def __repr__(self):
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return string_rep
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def make_linked_list(elements_list):
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"""Creates a Linked List from the elements of the given sequence
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(list/tuple) and returns the head of the Linked List."""
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def make_linked_list(elements_list: list | tuple) -> Node:
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"""
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Creates a Linked List from the elements of the given sequence
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(list/tuple) and returns the head of the Linked List.
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>>> make_linked_list([])
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Traceback (most recent call last):
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...
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ValueError: The Elements List is empty
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>>> make_linked_list(())
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Traceback (most recent call last):
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...
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ValueError: The Elements List is empty
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>>> make_linked_list([1])
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<1> ---> <END>
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>>> make_linked_list((1,))
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<1> ---> <END>
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>>> make_linked_list([1, 3, 5, 32, 44, 12, 43])
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<1> ---> <3> ---> <5> ---> <32> ---> <44> ---> <12> ---> <43> ---> <END>
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>>> make_linked_list((1, 3, 5, 32, 44, 12, 43))
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<1> ---> <3> ---> <5> ---> <32> ---> <44> ---> <12> ---> <43> ---> <END>
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"""
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# if elements_list is empty
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if not elements_list:
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raise Exception("The Elements List is empty")
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raise ValueError("The Elements List is empty")
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# Set first element as Head
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head = Node(elements_list[0])
@@ -34,11 +55,3 @@ def make_linked_list(elements_list):
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current.next = Node(data)
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current = current.next
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return head
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list_data = [1, 3, 5, 32, 44, 12, 43]
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print(f"List: {list_data}")
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print("Creating Linked List from List.")
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linked_list = make_linked_list(list_data)
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print("Linked List:")
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print(linked_list)

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