Convert a given number to its Roman representation.
For example, if the number is 98, it should display 'XCVIII'
copy of Problem 63.
Count from 0 to N^M in base N.
Is A the inverse of B?
Make a run-length companion vector
Perfect Square or not
Find the square of the sum of the digits of a number
Concatenate two strings
Find the dimensions of a matrix
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