In ValiDate ISO 8601 by RX, the challenge was to use only standard regular expressions to validate standard date formats and values (the former is a common job for RX, the latter was unusual). The winning answer used 778 bytes. This challenge is to beat that using any language of your choosing, b...

A regular string looks like this: Hello,IAmAStringSnake! And a string snake looks something like this: Hel l rin o,IAmASt g S !ekan Your Task String snakes are dangerous, so you must make a program that takes a string snake as input and outputs it as a r...

It is presented as a JSON file. LINK Can any of you solve it?

king-of-the-hill A Simple Card Game Take 2 standard decks of cards, and 4 players. Shuffle the deck, and distribute the cards evenly among the 4 players. Each player will take one card in their hand (visible to only the player himself), and place the others on a stack in front of them. Overview...

Is the path correct ? Given a string, your program must determine whether or not Alice can reach Bob, following the signs on the map. You must return a truthy or falsy value. The input string will contain the following characters : and \n (space). Only used for padding. >, <, ^, v, are the "...

Draw a spiral in a box This geometric spiral looks complicated, but it's fairly simple to draw; take the following box: Draw a straight line between the corner of the box and some set distance above the next corner counter-clockwise. Continue this pattern inward, always staying that set ...