Day 5

Day 05/Part 1/index.ts

@@ -0,0 +1,52 @@
+import fs from 'node:fs';
+
+export default function runner(input: string) {
+  fs.readFile(`./${input}`, 'utf8', (err, data) => {
+    if (err) throw err;
+    const [rawRules, rawPages] = data.split('\n\n')
+
+
+    var rules :Map<string, number> = new Map();
+
+    const parsedRules = (rawRules??"").split("\n")
+    parsedRules.map(pRule => {
+      const [v1, v2] = pRule.split("|")
+      rules.set(pRule, -1)
+      rules.set(`${v2}|${v1}`, 1)
+    })
+
+    let splitPages = (rawPages??"").split("\n")
+    splitPages = splitPages.filter(value => {
+      const aPages = value.split(",");
+      const bPages = value.split(",");
+
+
+      aPages.sort((a, b) => {
+        return rules.get(`${a}|${b}`)??0
+      })
+
+
+      return compareArrays(aPages, bPages);
+    })
+
+    console.log(splitPages)
+
+    let sum = 0;
+
+    splitPages.forEach(value => {
+      const pag = value.split(',')
+      const mid = ((pag.length-1)/2)
+      console.log(mid, pag[mid])
+      sum += parseInt(pag[mid]??"");
+    })
+
+    console.log(sum)
+
+  })
+}
+
+function compareArrays (x: any[], y: any[]): boolean{
+  return (x.length == y.length && x.every((value, index) => {
+    return value === y[index];
+  }))
+}

Day 05/Part 2/index.ts

@@ -0,0 +1,56 @@
+import fs from 'node:fs';
+
+export default function runner(input: string) {
+  fs.readFile(`./${input}`, 'utf8', (err, data) => {
+    if (err) throw err;
+    const [rawRules, rawPages] = data.split('\n\n')
+
+
+    var rules :Map<string, number> = new Map();
+
+    const parsedRules = (rawRules??"").split("\n")
+    parsedRules.map(pRule => {
+      const [v1, v2] = pRule.split("|")
+      rules.set(pRule, -1)
+      rules.set(`${v2}|${v1}`, 1)
+    })
+
+    let splitPages = (rawPages??"").split("\n")
+    splitPages = splitPages.filter(value => {
+      const aPages = value.split(",");
+      const bPages = value.split(",");
+
+
+      aPages.sort((a, b) => {
+        return rules.get(`${a}|${b}`)??0
+      })
+
+
+      return !compareArrays(aPages, bPages);
+    })
+
+
+    let sortedPages : string[][] = []
+    splitPages.forEach(value => {
+      sortedPages.push(value.split(',').sort((a, b) => rules.get(`${a}|${b}`)??0))
+    })
+
+    console.log(sortedPages)
+    let sum = 0;
+
+    sortedPages.forEach(value => {
+      const mid = ((value.length-1)/2)
+      console.log(mid, value[mid])
+      sum += parseInt(value[mid]??"");
+    })
+
+    console.log(sum)
+
+  })
+}
+
+function compareArrays (x: any[], y: any[]): boolean{
+  return (x.length == y.length && x.every((value, index) => {
+    return value === y[index];
+  }))
+}