This could allow special numeric characters such as ¾ to be removed. See isnumeric documentation.

Approved by someone

Fix for Julia

Random arrays are now sorted in C. thanks

In Julia this is a one liner. 7kyu would be a better choice.

There is a equation for the sum of the squares. Finding the root of this equation would find you the answer, but you would need to find the root of a cubic equation. m(m+1)(2m+1)/6 = sum of squares (1^2+2^2+3^2....m^2)

I appreciate the heads up

isletter will also find letters like alpha and beta as true.

seems the best practice is using O(n^2) instead of O(n) - leaving room for the future development :-)

Generic solution!

With the Julia version I get unordered tests arrays:
ary = [1, -4, -1, 1, -5, 5, -4, -2] and val = 3

8balls is just a little shorter ;)

This is not the best practice, because Julia has a partialsort function, which is more efficient.