





'''simple docstring'''







from typing import Any


class     _a						:
       def __init__(			self		:			List[Any]     ,       lowercase		:			Any       ):



           '''simple docstring'''

           UpperCAmelCase     =	data
           UpperCAmelCase     =	None







       def __repr__(			self		:			List[str]       ):



           '''simple docstring'''

           return f"Node({self.data})"






class     _a						:
       def __init__(			self		:			str       ):



           '''simple docstring'''

           UpperCAmelCase     =	None
       def __iter__(			self		:			List[str]       ):



           '''simple docstring'''

           UpperCAmelCase     =	self.head
           while node:
               yield node.data
               UpperCAmelCase     =	node.next
       def __len__(			self		:			List[str]       ):



           '''simple docstring'''

           return sum(1 for _ in self       )
       def __repr__(			self		:			int       ):



           '''simple docstring'''

           return "->".join([str(lowercase       ) for item in self]       )
       def __getitem__(			self		:			int     ,       lowercase		:			int       ):



           '''simple docstring'''

           if not 0 <= index < len(self       ):
               raise ValueError('''list index out of range.'''       )
           for i, node in enumerate(self       ):
               if i == index:
                   return node
           return None
       def __setitem__(			self		:			str     ,       lowercase		:			int     ,       lowercase		:			Any       ):



           '''simple docstring'''

           if not 0 <= index < len(self       ):
               raise ValueError('''list index out of range.'''       )
           UpperCAmelCase     =	self.head
           for _ in range(lowercase       ):
               UpperCAmelCase     =	current.next
           UpperCAmelCase     =	data
       def 					A   (			self		:			List[Any]     ,       lowercase		:			Any       ):



           '''simple docstring'''

           self.insert_nth(len(self       )     ,       lowercase       )
       def 					A   (			self		:			List[Any]     ,       lowercase		:			Any       ):



           '''simple docstring'''

           self.insert_nth(0     ,       lowercase       )
       def 					A   (			self		:			int     ,       lowercase		:			int     ,       lowercase		:			Any       ):



           '''simple docstring'''

           if not 0 <= index <= len(self       ):
               raise IndexError('''list index out of range'''       )
           UpperCAmelCase     =	Node(lowercase       )
           if self.head is None:
               UpperCAmelCase     =	new_node
           elif index == 0:
               UpperCAmelCase     =	self.head  # link new_node to head
               UpperCAmelCase     =	new_node
           else:
               UpperCAmelCase     =	self.head
               for _ in range(index - 1       ):
                   UpperCAmelCase     =	temp.next
               UpperCAmelCase     =	temp.next
               UpperCAmelCase     =	new_node
       def 					A   (			self		:			Union[str, Any]       ):  # print every node data



           '''simple docstring'''

           print(self       )
       def 					A   (			self		:			Any       ):



           '''simple docstring'''

           return self.delete_nth(0       )
       def 					A   (			self		:			Tuple       ):  # delete from tail



           '''simple docstring'''

           return self.delete_nth(len(self       ) - 1       )
       def 					A   (			self		:			Dict     ,       lowercase		:			int = 0       ):



           '''simple docstring'''

           if not 0 <= index <= len(self       ) - 1:  # test if index is valid
               raise IndexError('''List index out of range.'''       )
           UpperCAmelCase     =	self.head  # default first node
           if index == 0:
               UpperCAmelCase     =	self.head.next
           else:
               UpperCAmelCase     =	self.head
               for _ in range(index - 1       ):
                   UpperCAmelCase     =	temp.next
               UpperCAmelCase     =	temp.next
               UpperCAmelCase     =	temp.next.next
           return delete_node.data
       def 					A   (			self		:			Any       ):



           '''simple docstring'''

           return self.head is None







       def 					A   (			self		:			str       ):



           '''simple docstring'''

           UpperCAmelCase     =	None
           UpperCAmelCase     =	self.head

           while current:
               # Store the current node's next node.
               UpperCAmelCase     =	current.next
               # Make the current node's next point backwards
               UpperCAmelCase     =	prev
               # Make the previous node be the current node
               UpperCAmelCase     =	current
               # Make the current node the next node (to progress iteration)
               UpperCAmelCase     =	next_node
           # Return prev in order to put the head at the end
           UpperCAmelCase     =	prev






def 		snake_case_							():
    UpperCAmelCase     =	LinkedList()
    assert linked_list.is_empty() is True
    assert str(_a  ) == ""

    try:
        linked_list.delete_head()
        raise AssertionError  # This should not happen.
    except IndexError:
        assert True  # This should happen.

    try:
        linked_list.delete_tail()
        raise AssertionError  # This should not happen.
    except IndexError:
        assert True  # This should happen.

    for i in range(1_0  ):
        assert len(_a  ) == i
        linked_list.insert_nth(_a					,     i + 1  )
    assert str(_a  ) == "->".join(str(_a  ) for i in range(1					,     1_1  )  )

    linked_list.insert_head(0  )
    linked_list.insert_tail(1_1  )
    assert str(_a  ) == "->".join(str(_a  ) for i in range(0					,     1_2  )  )

    assert linked_list.delete_head() == 0
    assert linked_list.delete_nth(9  ) == 1_0
    assert linked_list.delete_tail() == 1_1
    assert len(_a  ) == 9
    assert str(_a  ) == "->".join(str(_a  ) for i in range(1					,     1_0  )  )

    assert all(linked_list[i] == i + 1 for i in range(0					,     9  )  ) is True

    for i in range(0					,     9  ):
        UpperCAmelCase     =	-i
    assert all(linked_list[i] == -i for i in range(0					,     9  )  ) is True

    linked_list.reverse()
    assert str(_a  ) == "->".join(str(_a  ) for i in range(-8					,     1  )  )





def 		snake_case_							():
    UpperCAmelCase     =	[
        -9,
        1_0_0,
        Node(7_7_3_4_5_1_1_2  ),
        '''dlrow olleH''',
        7,
        5_5_5_5,
        0,
        -192.5_5555,
        '''Hello, world!''',
        77.9,
        Node(1_0  ),
        None,
        None,
        12.20,
    ]
    UpperCAmelCase     =	LinkedList()

    for i in test_input:
        linked_list.insert_tail(_a  )

    # Check if it's empty or not
    assert linked_list.is_empty() is False
    assert (
        str(_a  ) == "-9->100->Node(77345112)->dlrow olleH->7->5555->0->"
        "-192.55555->Hello, world!->77.9->Node(10)->None->None->12.2"
    )

    # Delete the head
    UpperCAmelCase     =	linked_list.delete_head()
    assert result == -9
    assert (
        str(_a  ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None->None->12.2"
    )

    # Delete the tail
    UpperCAmelCase     =	linked_list.delete_tail()
    assert result == 12.2
    assert (
        str(_a  ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None->None"
    )

    # Delete a node in specific location in linked list
    UpperCAmelCase     =	linked_list.delete_nth(1_0  )
    assert result is None
    assert (
        str(_a  ) == "100->Node(77345112)->dlrow olleH->7->5555->0->-192.55555->"
        "Hello, world!->77.9->Node(10)->None"
    )

    # Add a Node instance to its head
    linked_list.insert_head(Node('''Hello again, world!'''  )  )
    assert (
        str(_a  )
        == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
        "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None"
    )

    # Add None to its tail
    linked_list.insert_tail(_a  )
    assert (
        str(_a  )
        == "Node(Hello again, world!)->100->Node(77345112)->dlrow olleH->"
        "7->5555->0->-192.55555->Hello, world!->77.9->Node(10)->None->None"
    )

    # Reverse the linked list
    linked_list.reverse()
    assert (
        str(_a  )
        == "None->None->Node(10)->77.9->Hello, world!->-192.55555->0->5555->"
        "7->dlrow olleH->Node(77345112)->100->Node(Hello again, world!)"
    )





def 		snake_case_							():
    from doctest import testmod

    testmod()

    UpperCAmelCase     =	LinkedList()
    linked_list.insert_head(input('''Inserting 1st at head '''  ).strip()  )
    linked_list.insert_head(input('''Inserting 2nd at head '''  ).strip()  )
    print('''\nPrint list:'''  )
    linked_list.print_list()
    linked_list.insert_tail(input('''\nInserting 1st at tail '''  ).strip()  )
    linked_list.insert_tail(input('''Inserting 2nd at tail '''  ).strip()  )
    print('''\nPrint list:'''  )
    linked_list.print_list()
    print('''\nDelete head'''  )
    linked_list.delete_head()
    print('''Delete tail'''  )
    linked_list.delete_tail()
    print('''\nPrint list:'''  )
    linked_list.print_list()
    print('''\nReverse linked list'''  )
    linked_list.reverse()
    print('''\nPrint list:'''  )
    linked_list.print_list()
    print('''\nString representation of linked list:'''  )
    print(_a  )
    print('''\nReading/changing Node data using indexing:'''  )
    print(F"Element at Position 1: {linked_list[1]}"  )
    UpperCAmelCase     =	input('''Enter New Value: '''  ).strip()
    print('''New list:'''  )
    print(_a  )
    print(F"length of linked_list is : {len(_a  )}"  )


if __name__ == "__main__":
   main()










'''simple docstring'''







from __future__ import annotations





def 		snake_case_							(_a			:							str					,     _a			:							list[str] | None = None  ):
    UpperCAmelCase     =	word_bank or []
    # create a table
    UpperCAmelCase     =	len(_a  ) + 1

    UpperCAmelCase     =	[]
    for _ in range(_a  ):
        table.append([]  )
    # seed value
    UpperCAmelCase     =	[[]]  # because empty string has empty combination

    # iterate through the indices
    for i in range(_a  ):
        # condition
        if table[i] != []:
            for word in word_bank:
                # slice condition
                if target[i : i + len(_a  )] == word:
                    UpperCAmelCase     =	[
                        [word, *way] for way in table[i]
                    ]
                    # adds the word to every combination the current position holds
                    # now,push that combination to the table[i+len(word)]
                    table[i + len(_a  )] += new_combinations

    # combinations are in reverse order so reverse for better output
    for combination in table[len(_a  )]:
        combination.reverse()

    return table[len(_a  )]


if __name__ == "__main__":
   print(all_construct('jwajalapa', ['jwa', 'j', 'w', 'a', 'la', 'lapa']))
   print(all_construct('rajamati', ['s', 'raj', 'amat', 'raja', 'ma', 'i', 't']))
   print(
       all_construct(
           'hexagonosaurus',
           ['h', 'ex', 'hex', 'ag', 'ago', 'ru', 'auru', 'rus', 'go', 'no', 'o', 's'],
       )
   )




