Check whether the entire matrix is palindrome or not.
matrix = [7 8 7]
matrix_reverse = [7 8 7]
So the matrix is palindrome.
Change the sign of even index entries of the reversed vector
Switch matrix to a column vector
02 - Vector Variables 4
Sum the 'edge' values of a matrix
Find the square of the sum of the digits of a number
Convert a number to its Roman representation
Find the area of the four walls
Concatenate two strings
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