day 5, feels nice

.aocrunner.json

@@ -63,16 +63,16 @@
     },
     {
       "part1": {
-        "solved": false,
-        "result": null,
+        "solved": true,
+        "result": "4905",
         "attempts": [],
-        "time": null
+        "time": 29.389645
       },
       "part2": {
-        "solved": false,
-        "result": null,
+        "solved": true,
+        "result": "6204",
         "attempts": [],
-        "time": null
+        "time": 54.772924
       }
     },
     {

README.md

@@ -15,7 +15,7 @@
 [![Day](https://badgen.net/badge/02/%E2%98%85%E2%98%85/green)](src/day02)
 [![Day](https://badgen.net/badge/03/%E2%98%85%E2%98%85/green)](src/day03)
 [![Day](https://badgen.net/badge/04/%E2%98%85%E2%98%85/green)](src/day04)
-![Day](https://badgen.net/badge/05/%E2%98%86%E2%98%86/gray)
+[![Day](https://badgen.net/badge/05/%E2%98%85%E2%98%85/green)](src/day05)
 ![Day](https://badgen.net/badge/06/%E2%98%86%E2%98%86/gray)
 ![Day](https://badgen.net/badge/07/%E2%98%86%E2%98%86/gray)
 ![Day](https://badgen.net/badge/08/%E2%98%86%E2%98%86/gray)
@@ -90,16 +90,16 @@ Both parts: 2.477ms
 
 ```
 Day 04
-Time part 1: 327.703ms
-Time part 2: 201.225ms
-Both parts: 528.928ms
+Time part 1: 67.709ms
+Time part 2: 182.986ms
+Both parts: 250.695ms
 ```
 
 ```
 Day 05
-Time part 1: -
-Time part 2: -
-Both parts: -
+Time part 1: 29.068ms
+Time part 2: 53.891ms
+Both parts: 82.959ms
 ```
 
 ```
@@ -243,8 +243,8 @@ Both parts: -
 ```
 
 ```
-Total stars: 8/50
-Total time: 537.288ms
+Total stars: 10/50
+Total time: 342.015ms
 ```
 
 <!--/RESULTS-->

src/day05/README.md

@@ -0,0 +1,9 @@
+# 🎄 Advent of Code 2024 - day 5 🎄
+
+## Info
+
+Task description: [link](https://adventofcode.com/2024/day/5)
+
+## Notes
+
+...

src/day05/index.ts

@@ -0,0 +1,119 @@
+import run from "aocrunner"
+
+const parseInput = (rawInput: string) => {
+  const [a,b] = rawInput.split('\n\n')
+  return {
+    rules: a.split('\n').map(rule => rule.split('|').map(Number)),
+    updates: b.split('\n').map(update => update.split(',').map(Number))
+  }
+}
+
+const part1 = (rawInput: string) => {
+  const {rules, updates} = parseInput(rawInput)
+  return updates.reduce((total, update) => {
+    let seen: number[] = []
+    for (const page of update) {
+      if (rules.some(rule => seen.includes(rule[1]) && rule[0] === page)) {
+        return total
+      }  
+      seen.push(page)
+    }
+    return total + seen[Math.floor(seen.length / 2)]
+  }, 0)
+}
+
+const part2 = (rawInput: string) => {
+  const {rules, updates} = parseInput(rawInput)
+  return updates.reduce((total, update) => {
+    let seen: number[] = []
+    for (const page of update) {
+      if (rules.some(rule => seen.includes(rule[1]) && rule[0] === page)) {
+        // needs fixing
+        const sortedUpdate = update.sort((p1,p2) => {
+          return rules.some(rule => rule[0] === p1 && rule[1] === p2) ? -1 : 1
+        })
+        return total + update[Math.floor(update.length / 2)]
+      }  
+      seen.push(page)
+    }
+    // it's fine
+    return total
+  }, 0)
+}
+
+run({
+  part1: {
+    tests: [
+      {
+        input: `47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47`,
+        expected: 143,
+      },
+    ],
+    solution: part1,
+  },
+  part2: {
+    tests: [
+      {
+        input: `47|53
+97|13
+97|61
+97|47
+75|29
+61|13
+75|53
+29|13
+97|29
+53|29
+61|53
+97|53
+61|29
+47|13
+75|47
+97|75
+47|61
+75|61
+47|29
+75|13
+53|13
+
+75,47,61,53,29
+97,61,53,29,13
+75,29,13
+75,97,47,61,53
+61,13,29
+97,13,75,29,47`,
+        expected: 123,
+      },
+    ],
+    solution: part2,
+  },
+  trimTestInputs: true,
+  onlyTests: false,
+})