Convert a given number to its Roman representation.
For example, if the number is 98, it should display 'XCVIII'
copy of Problem 63.
Times 2 - START HERE
Remove all the words that end with "ain"
Back to basics 14 - Keywords
Getting the row and column location from a matrix
union without repitition
Find the square of the sum of the digits of a number
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Reverse a matrix
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