I like the way James present a problem: educatiive and interesting.
Implement a ROT13 cipher
Remove the polynomials that have positive real elements of their roots.
Swap the input arguments
Sum the Digits of a Number
Find the sides of an isosceles triangle when given its area and height from its base to apex
A matrix of introverts
Matrix of Multiplication Facts
Golomb's self-describing sequence (based on Euler 341)
Give me Hamming on five, hold the mayo
Exponents in Factorials
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