Sharing my approaches to solving the checkio typescript problems https://checkio.org/

This is a bit of a learning exercise for me, so I am approaching the problems and solving them in my own way, then checking against solutions. And then making sure I understand the solutions, and trying them out myself.

Don't peek if you don't want to be spoiled.

Things I've learnt/things that would be useful to remember in future:

• logical operators return booleans!
• read documentation fully - make sure you grasp what methods are actually returning.
• https://regex101.com/ is useful!
• There seems to be methods for everything you ever need to do on arrays - see if these help before looping... https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
• array.sort is complicated. -1 means moving a forward, and 1 means moving b forward. 0 means no change. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/sort
• • you can manipulate a and b, you only need to return -1, 0 and 1 within the function, the sort does all the magic on the array itself. Actual magic!
• useful string method https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/split