Question

3. A square nxn matrix of integers can be written in Python as a list with n elements, where each element is in turn a list of n
integers, representing a row of the matrix. For instance, the matrix
1
2
3
4
5
6
7
8
9
would be represented as [[1,2,3], [4,5,6], [7,8,9]].
Write a function leftrotate(m) that takes a list representation m of a square matrix as input, and returns the matrix obtained
by rotating the original matrix counterclockwize by 90 degrees. For instance, if we rotate the matrix above, we get
3 6 9
2 5 8
1 4 7
Your function should not modify the argument m provided to the function rotate().
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Answer 1

Answer:

please share the page of book I didn't understood that