Check whether the entire matrix is palindrome or not.
matrix = [7 8 7]
matrix_reverse = [7 8 7]
So the matrix is palindrome.
Return the first and last character of a string
We love vectorized solutions. Problem 1 : remove the row average.
Create matrix of replicated elements
Basics: Divide integers to get integer outputs in all cases
Max of a Vector
Concatenate two strings
Convert a number to its Roman representation
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Find the area of the four walls
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