Visualize the alphabet-zip code-golf string array-manipulation permutations Given two parameters: split 1st param string into 2nd-param parts; zip resulting array; join array; print result array. Repeat until current string = operand string.

code-golf math abstract-algebra Define the finite field GF(9) GF(9) or GF(32) is the smallest finite field whose order isn't a prime or a power of two. Finite fields of prime order aren't particurlarly interesting and there are already challenges for GF(28) and GF(264). First define nine eleme...

(Note: this challenge is distinct from my other challenge (Draw a path made from direction changers) because of it's rendering of direction (horizontal or vertical), crossing points and single or double paths.) Let's start with a frame drawn in Ascii characters. For this challenge it will alwa...

Next Shared Totient The totient function φ(n), also called Euler's totient function, is defined as the number of positive integers <=n that are relatively prime to (i.e., do not contain any factor in common with) n, where 1 is counted as being relatively prime to all numbers. source Challenge ...