Fear No SQL
Ceres Search Day 4 took a different turn, we’re still parsing through text to find special values, but now we need to parse horizontally, vertically, and diagonally through a grid of text looking for “XMAS”, which could appear forwards or backwards (SAMX.) For this I built a two-dimensional map of the text. As I read…
Mull It Over For Day 3, we’re given sequences of fictitious code and we have to extract the multiplication commands from it; which will be of the form “mul(x,y)” where x and y are integers. So, using a regular expression makes finding the valid substrings easy. Once those are extracted, it’s just a matter of…
Red-Nosed Reports For Day 2, we have to find sequences of numbers that are safe to process. For part 1, “safe” means the numbers are in order, either increasing or decreasing, and the step between each is never more than 3. My approach to this was to pivot each row of numbers into a sequence,…
Historian Hysteria In this puzzle we’re given 2 lists of numbers that should be paired together such that the smallest value of each list form a pair, then the next smallest, and so on until we pair the largest values from each list together. To solve it, I read the values from each line of…