Need help with the python question?def create_matrix(lst): """Create matrix will take matrix represented as a list of list. And output a function which will index the input matrix Not allowed to Import Libraries Args: lst (List of List): A list of list representation of matrix. There will be more than one element of list type in lst. Returns: [function]: An indexing function. >>> matrix_index1 = create_matrix([[1, 2], [2, 3]]) # a 2 x 2 matrix. >>> matrix_index2 = create_matrix([[1, 2, 3], [2, 3, 1]]) # a 2 x 3 matrix. >>> matrix_index3 = create_matrix([[1, 2, 3], []]) # an invalid matrix """ ### Modify your code here def matrix_index(i=None, j=None): """Indexing function which will retrive (i, j) entry of the input matrix representation Args: i (int, optional): row index. Defaults to None. (0-index) j (int, optional): column index. Defaults to None. (0-index) Return: List of List: a list of list representation of the indexed. Return None if matrix or index is invalid >>> matrix_index1() [[1, 2], [2, 3]] >>> matrix_index1(i=1) # row 1 (2nd row since 0 indexed) [[2, 3]] >>> matrix_index1(j=1) # col 1 (2nd row since 0 indexed) [[2], [3]] >>> matrix_index1(i=1, j=1) [[3]] >>> print(matrix_index1(i=1, j=10)) None # invalid index >>> print(matrix_index3()) None # invalid matrix """ return def create_matrix(1st):"""Create matrix will take matrix represented as a list of list.And output a function which will index the input matrixNot allowed to Import LibrariesArgs:1st (List of List): A list of list representation of matrix.There will be more than one element of list type in 1st.Returns:[function]: An indexing function.>>> matrix_index1 = create_matrix([[1, 2], [2, 3]]) # a 2 x 2 matrix.create_matrix([[1, 2, 3], [2, 3, 1]]) # a 2 x 3 matrix.>> matrix_index3 = create_matrix([[1, 2, 3], []]) # an invalid matrix>>> matrix_index2### Modify your code heredef matrix_index(i=None, j=None):"*"Indexing function which will retrive (i, j) entry of the inputmatrix representationArgs:i (int, optional): row index. Defaults to None. (0-index)j (int, optional): column index. Defaults to None. (0-index)Return:List of List:a list of list representation of the indexed.Return None if matrix or index is invalid>> matrix_index1()[[1, 2], [2, 3]]>> matrix_index1(i=1) # row 1 (2nd row since 0 indexed)[[2, 3]]>>> matrix_index1(j=1) # col 1 (2nd row since 0 indexed)[[2], [3]]>>> matrix_index1(i=1, j=1)[[3]]>> print(matrix_index1(i=1, j=10))None # invalid index>> print(matrix_index3())None # invalid matrixreturn

def create_matrix(lst): row=0 col=len(lst[0]) for i in range(len(lst)):…

def create_matrix(1st): """Create matrix will take matrix represented as a list of list. And output a function which will index the input matrix Not allowed to Import Libraries Args: 1st (List of List): A list of list representation of matrix. There will be more than one element of list type in 1st. Returns: [function]: An indexing function. »> matrix_index1 = create_matrix([[1, 2], [2, 3]]) # a 2 x 2 matrix. >> matrix_index2 >> matrix_index3 = create_matrix([[1, 2, 3], []]) # an invalid matrix create_matrix([[1, 2, 3], [2, 3, 1]]) # a 2 x 3 matrix. WY ### Modify your code here def matrix_index(i=None, j-None): "*"Indexing function which wil1 retrive (i, j) entry of the input matrix representation Args: i (int, optional): row index. Defaults to None. (0-index) j (int, optional): column index. Defaults to None. (0-index) Return: List of List: a list of list representation of the indexed. Return None if matrix or index is invalid >>> matrix_index1() [[1, 2], [2, 3]] >» matrix_index1(i=1) # row 1 (2nd row since 0 indexed) [[2, 3]] >> matrix_index1(j=1) # col 1 (2nd row since 0 indexed) [[2], [3]] >> matrix_index1(i=1, j-1) [[3]] >> print(matrix_index1(i=1, j-10)) None # invalid index >> print(matrix_index3()) None # invalid matrix return

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Chapter17: Linked Lists

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Need help with the python question?

def create_matrix(lst):

"""Create matrix will take matrix represented as a list of list.

And output a function which will index the input matrix

Not allowed to Import Libraries

Args:

lst (List of List): A list of list representation of matrix.

There will be more than one element of list type in lst.

Returns:

[function]: An indexing function.

>>> matrix_index1 = create_matrix([[1, 2], [2, 3]]) # a 2 x 2 matrix.

>>> matrix_index2 = create_matrix([[1, 2, 3], [2, 3, 1]]) # a 2 x 3 matrix.

>>> matrix_index3 = create_matrix([[1, 2, 3], []]) # an invalid matrix

"""

### Modify your code here

def matrix_index(i=None, j=None):

"""Indexing function which will retrive (i, j) entry of the input

matrix representation

Args:

i (int, optional): row index. Defaults to None. (0-index)

j (int, optional): column index. Defaults to None. (0-index)

Return:

List of List: a list of list representation of the indexed.

Return None if matrix or index is invalid

>>> matrix_index1()

[[1, 2], [2, 3]]

>>> matrix_index1(i=1) # row 1 (2nd row since 0 indexed)

[[2, 3]]

>>> matrix_index1(j=1) # col 1 (2nd row since 0 indexed)

[[2], [3]]

>>> matrix_index1(i=1, j=1)

[[3]]

>>> print(matrix_index1(i=1, j=10))

None # invalid index

>>> print(matrix_index3())

None # invalid matrix

"""

return

def create_matrix(1st):
"""Create matrix will take matrix represented as a list of list.
And output a function which will index the input matrix
Not allowed to Import Libraries
Args:
1st (List of List): A list of list representation of matrix.
There will be more than one element of list type in 1st.
Returns:
[function]: An indexing function.
>>> matrix_index1 = create_matrix([[1, 2], [2, 3]]) # a 2 x 2 matrix.
create_matrix([[1, 2, 3], [2, 3, 1]]) # a 2 x 3 matrix.
>> matrix_index3 = create_matrix([[1, 2, 3], []]) # an invalid matrix
>>> matrix_index2
### Modify your code here
def matrix_index(i=None, j=None):
"*"Indexing function which will retrive (i, j) entry of the input
matrix representation
Args:
i (int, optional): row index. Defaults to None. (0-index)
j (int, optional): column index. Defaults to None. (0-index)
Return:
List of List:
a list of list representation of the indexed.
Return None if matrix or index is invalid
>> matrix_index1()
[[1, 2], [2, 3]]
>> matrix_index1(i=1) # row 1 (2nd row since 0 indexed)
[[2, 3]]
>>> matrix_index1(j=1) # col 1 (2nd row since 0 indexed)
[[2], [3]]
>>> matrix_index1(i=1, j=1)
[[3]]
>> print(matrix_index1(i=1, j=10))
None # invalid index
>> print(matrix_index3())
None # invalid matrix
return

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