#daily programming challenge

So this one is about finding ‘Ruth-Aaron pairs’, which are pairs of consecutive numbers where the prime factors for each sum to the same number. Hopefully it’s clear enough what the code does, but it just goes through each number breaking it down into prime factors using some leftover stuff from the prime factor tree code. 

Due to crushing time constraints, today’s one is just a suuuuuper watered down version of this one; honestly it has little to do with the spreadsheet development thing, but I am super-busy and low on challenges, so! It can take input in the format cell = number, or cell = cell + number, it takes instructions in a set and iterates through them all, remembering set variables for each time. Basically it’s just a little variable-setting program but shhh

Today’s one is about outputting all the cells that would be selected from a spreadsheet range; it takes range : and & and one exclude ~ command per input (and it’s trusting), and it works in Char-Int format (though the actual cells convert the letters to numbers first) annnd it’s ‘part one’ but I don’t think I’ll do the next one (or it’ll be a very cut down version). 

Maybe this one is easier in other languages, but it’s definitely one of the longer easy ones I’ve done. It’s about carry adding - showing addition like when you do it by hand, putting the ones on top - but it is one-hundred percent string alignment which makes it long and tedious and fiddly =P Basically, it just iterates along the rows summing up characters from each line and the carry line, and if the sum is more than one digit it adds it to the carry line. (Plus a whole bunch of string alignment stuff). 

Thiiiis one is kind of like a spell checker; it checks words against dictionary words, finds the point where there are no more matches (where the typo was made) and prints it out with a ‘~’ before the first incorrect character. Then it prints all the words that start with the correct part of the word. Maybe a smarter solution would have been to print anagrams or suggestions only using the inputted letters, but I didn’t feel like digit matching today =B

This one is kind of a little ‘day planner’ thing? It’s not the fullest implementation because I really need to be doing other things, but it can add and delete events, and it does sort them by time, so it achieves the most basic features. You’ve probably seen this kind of code from me before though, pretty simple user input parsing with a scanner. 

This one is a unit calculator - it can convert between a handful of predefined units, by looking at the relative ratios. It’s extensible, so long as you get the proper ratio between the new unit and meters/hogsheads for length or mass. I did pinch the ratios from someone else’s answer on the challenge page to save me the work hehehe

I really don’t understand why this challenge is called ‘vampire numbers’ but I guess I would have just called it ‘numbers that multiply into numbers with the same digits’ so maybe I’m boring. So! It’s numbers that multiply into numbers with the same digits! And it’s not quite an implementation of what the challenge wanted, since it’s strictly two two-digit numbers making a four-digit number, and not flexible lengths, but I am very tired today so this is the best I’m doing =B