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 """ ### Modify your code here 270def create_matrix(1st):271"*"Create matrix will take matrix represented as a list of list.272And output a function which will index the input matrix273Not allowed to Import Libraries274Args:2751st (List of List): A list of list representation of matrix.276There will be more than one element of list type in 1st.277278Returns:279[function]: An indexing function.280281>> 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.create_matrix([[1, 2, 3], []]) # an invalid matrix282>>> matrix_index2283>>> matrix_index3284285286### Modify your code here287def matrix_index(i=None, j=None):"""Indexing function which will retrive (i, j) entry of the input288289290matrix representation291292Args:i (int, optional): row index. Defaults to None. (0-index)j (int, optional): column index. Defaults to None. (0-index)293294295296Return:297List of List: a list of list representation of the indexed.298Return None if matrix or index is invalid299>>> 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))300301302303304305306307308309None # invalid index310>> print(matrix_index3())311None # invalid matrixEE EE EE312313

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

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 """ ### Modify your code here

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 """ ### Modify your code here

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter17: Linked Lists

Section: Chapter Questions

Problem 18SA

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Question

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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

"""

### Modify your code here

270
def create_matrix(1st):
271
"*"Create matrix will take matrix represented as a list of list.
272
And output a function which will index the input matrix
273
Not allowed to Import Libraries
274
Args:
275
1st (List of List): A list of list representation of matrix.
276
There will be more than one element of list type in 1st.
277
278
Returns:
279
[function]: An indexing function.
280
281
>> 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.
create_matrix([[1, 2, 3], []]) # an invalid matrix
282
>>> matrix_index2
283
>>> matrix_index3
284
285
286
### Modify your code here
287
def matrix_index(i=None, j=None):
"""Indexing function which will retrive (i, j) entry of the input
288
289
290
matrix representation
291
292
Args:
i (int, optional): row index. Defaults to None. (0-index)
j (int, optional): column index. Defaults to None. (0-index)
293
294
295
296
Return:
297
List of List: a list of list representation of the indexed.
298
Return None if matrix or index is invalid
299
>>> 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))
300
301
302
303
304
305
306
307
308
309
None # invalid index
310
>> print(matrix_index3())
311
None # invalid matrix
EE EE EE
312
313

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