If a number (n) is provided as an input, find the square of the sum of the digits of the number.
If n = 21, the answer will be square of (2 + 1) = 9
what's the answer for (-4+3+1)??? last time I checked, the answer was zero!!!!
-4 + 3 +1=0 right. I don't remember you saying the absolute value in the instructions.
middleAsColumn: Return all but first and last element as a column vector
Number of digits in an integer
Length of a short side
Sum of diagonals elements of a matrix
Find the dimensions of a matrix
Concatenate two strings
Convert a number to its Roman representation
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