Read the whole series: Part 1 – type inference <- you’re here Part 2 – traits Part 3 – case class/object (ADTs) Part 4 – apply & unapply functions Part 5 – implicits It’s a new year, a new job, a new language (Scala) and runtime (JVM) to work with. After a week of learning …
ps. look out for all my other solutions for Advent of Code challenges here. Day 25 See details of the challenge here. Today’s input looks like this: cpy a d cpy 7 c cpy 362 b inc d dec b jnz b -2 … At last, we’re at the end of this year’s Advent of …
ps. look out for all my other solutions for Advent of Code challenges here. Day 24 See details of the challenge here. Today’s challenge is a mix of Breadth-First Search (or Level Order Tree Traversal) and the Travelling Salesman Problem. First, let’s parse the input file into a 2D array to make it easier for …
ps. look out for all my other solutions for Advent of Code challenges here. Day 23 See details of the challenge here. Today’s input looks like this: cpy a b dec b cpy a d cpy 0 a cpy b c inc a .. Today’s challenge is an extension to Day 12, where we have …
ps. look out for all my other solutions for Advent of Code challenges here. Day 22 See details of the challenge here. Today’s input looks like this: root@ebhq-gridcenter# df -h Filesystem Size Used Avail Use% /dev/grid/node-x0-y0 …
ps. look out for all my other solutions for Advent of Code challenges here. Day 21 See details of the challenge here. Today’s input looks like this: swap position 2 with position 7 swap letter f with letter a swap letter c with letter a rotate based on position of letter g rotate based on …
ps. look out for all my other solutions for Advent of Code challenges here. Day 20 See details of the challenge here. Today’s input looks like this: 1873924193-1879728099 2042754084-2076891856 4112318198-4113899685 1039794493-1057170966 3791841434-3797494664 1518668516-1518748952 1946127596-1953926346 4058215215-4086224696 3429681642-3455096313 2599576643-2604275147 1800210010-1801990849 1761160149-1766904471 2774395403-2774748831 1520470679-1542287000 2343327790-2346083217 … First, let’s read the input into a list of tuples representing the …
ps. look out for all my other solutions for Advent of Code challenges here. Day 19 See details of the challenge here. I initially approached today’s challenge as a dynamic programming exercise, but it quickly transpired that there’s a much better way to do it once I realised that part 1 is in fact the …
ps. look out for all my other solutions for Advent of Code challenges here. Day 18 See details of the challenge here. To solve both part 1 and 2: Links Day 18 challenge description Advent of Code 2015 Solution for Day 17 All my F# solutions for Advent of Code Github repo
ps. look out for all my other solutions for Advent of Code challenges here. Day 17 See details of the challenge here. First, let’s add a hash function (that returns the MD5 as a hexadecimal string as we have done so often this year). Then, add a step function that’ll take a (x, y) position and the path …
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