![Hexadecimal Maze][1]][1] ![1]: https://i.stack.imgur.com/K8iKW.png

Who's going? Can you help me? If Abe goes, then Beth and Diana go. If Beth goes, then Catherine goes. If Catherine goes, then Diana goes. If Diana goes, then Ezra goes. Only three people go. Who goes? Challenge Given a list of several pairings of people, such that in each pairing the second pe...

Prime ant The "prime ant" is an obstinate animal that navigates the integers and divide them until there are only primes left! Initially, we have an infinite array A containing all the integers >= 2 : [2,3,4,5,6,.. ] Let p be the position of the ant on the array. Initially, p = 0 (array is 0...

Let's imagine we have a matrix of bits: 0 1 0 1 1 0 1 0 0 1 0 0 1 0 1 0 0 1 0 1 1 0 0 0 1 0 1 1 0 1 0 1 0 1 1 0 0 1 0 0 1 1 0 1 0 0 0 1 0 1 1 0 0 1 0 We want to set some of the bits in this matrix such that it forms a contiguous blob of 1s: 0 1 1 1 1 1 1 0 0 1 0 0 1 0 1 0 0 1 0 1 1 0 0 1 1 0 ...

Take an input list L containing positive integers, and insert the least amount of integers into the sequence, so that you make it a continuous one. Example: L = 4 2 6 1 Out: 4 3 2 3 4 5 6 5 4 3 2 1 The input and output formats are optional. Test cases: L = 1 Out: 1 L = 10 4 Out: 10 9 8 7 6...

Take two positive integers N and M and create the concatenated partial sums of [N], with M iterations. Output the result of the last iteration. Definition of the concatenated partial sum: Start with a number N and define a sequence X = [N] Append to X the partial sums of X Repeat step 2 M time...

Zoom box drawing characters Here are some sample box drawing characters: ╷ ┌┴┐ ╶┤ ├╴ └┬┘ ╵ How do we zoom them? Well, we need to triple their size. The result looks like this: ╻ ┃ ┃ ┏━━┻━━┓ ┃ ┃ ┃ ┃ ╺━━┫ ┣━━╸ ┃ ┃ ┃ ┃ ┗━━┳━━┛ ...

Alphabet rain Forgive me if this is a duplicate. The Task: The basic premise is to print out the input string but repeat each character, vertically, based on it's (1-indexed) location in the alphabet. Anything that falls outside of A-z would only be output once (the first line). This is cod...

Given two positive integers p and q, your task is to return the array A created by applying the following algorithm: Start with A = [p, q] and d = 2 For each pair (x, y) of consecutive numbers in A whose sum is divisible by d, insert (x + y) / d between x and y. If at least one matching pair wa...

The problem #6 of IMO 2009 reads: Let a 1, a 2, a 3, ..., a n, be distinct positive integers and let T be a set of n-1positive integers not containing a 1+a 2+a 3+...+a n, A grasshopper is to jump along the real axis, starting at the point 0 and making n jumps to the right with lengths a 1...

Your task: write a program/function that when given a string, outputs/returns the string in reverse-ish. Example: 1) Input Hello, World! 2) Number unique characters in input. (Input string separated by pipes (|) for readability) H|e|l|l|o|,| |W|o|r|l|d|! 1 2 3 4 5 6 7 8 9 10 3) For ...