first day

2024/1.1.ts

@@ -0,0 +1,24 @@
+import fs from 'node:fs';
+
+
+const file = fs.readFileSync('./2024/inputs/1').toString();
+const left = []
+const right: number[] = []
+// for await (const line of file.readLines()) {
+    
+// }
+
+const regexes = file.matchAll(/^(\d+)   (\d+)$/gm)
+
+for(const match of regexes){
+    left.push(Number(match[1]))
+    right.push(Number(match[2]))
+}
+left.sort()
+right.sort()
+
+const result = left.reduce((_prev, curr, index)=>{
+    return _prev + Math.abs(curr - right[index])
+},0)
+
+console.log(result)

2024/1.2.ts

@@ -0,0 +1,28 @@
+import fs from 'node:fs';
+
+
+const file = fs.readFileSync('./2024/inputs/1').toString();
+const left: number[] = []
+const right: number[] = []
+const leftOccurences: {[key:number]:number} = {}
+const rightOccurences: {[key:number]:number} = {}
+
+const regexes = file.matchAll(/^(\d+)   (\d+)$/gm)
+
+for(const match of regexes){
+    const leftNumber = Number(match[1])
+    const rightNumber = Number(match[2])
+    left.push(leftNumber)
+    right.push(rightNumber)
+
+    if(!(rightNumber in rightOccurences)){
+        rightOccurences[rightNumber] = 0
+    }
+    rightOccurences[rightNumber]++
+}
+
+const result = left.reduce((_prev, curr, index)=>{
+    return _prev + (curr * (rightOccurences[curr] ?? 0))
+},0)
+
+console.log(result)

package-lock.json

@@ -4,6 +4,7 @@
   "requires": true,
   "packages": {
     "": {
+      "name": "Advent-of-code",
       "dependencies": {
         "@digitak/esrun": "^3.2.25",
         "typescript": "^5.3.2"
@@ -482,11 +483,12 @@
       }
     },
     "node_modules/braces": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.2.tgz",
-      "integrity": "sha512-b8um+L1RzM3WDSzvhm6gIz1yfTbBt6YTlcEKAvsmqCZZFw46z626lVj9j1yEPW33H5H+lBQpZMP1k8l+78Ha0A==",
+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/braces/-/braces-3.0.3.tgz",
+      "integrity": "sha512-yQbXgO/OSZVD2IsiLlro+7Hf6Q18EJrKSEsdoMzKePKXct3gvD8oLcOQdIzGupr5Fj+EDe8gO/lxc1BzfMpxvA==",
+      "license": "MIT",
       "dependencies": {
-        "fill-range": "^7.0.1"
+        "fill-range": "^7.1.1"
       },
       "engines": {
         "node": ">=8"
@@ -570,9 +572,10 @@
       }
     },
     "node_modules/fill-range": {
-      "version": "7.0.1",
-      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.0.1.tgz",
-      "integrity": "sha512-qOo9F+dMUmC2Lcb4BbVvnKJxTPjCm+RRpe4gDuGrzkL7mEVl/djYSu2OdQ2Pa302N4oqkSg9ir6jaLWJ2USVpQ==",
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/fill-range/-/fill-range-7.1.1.tgz",
+      "integrity": "sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==",
+      "license": "MIT",
       "dependencies": {
         "to-regex-range": "^5.0.1"
       },
@@ -638,6 +641,7 @@
       "version": "7.0.0",
       "resolved": "https://registry.npmjs.org/is-number/-/is-number-7.0.0.tgz",
       "integrity": "sha512-41Cifkg6e8TylSpdtTpeLVMqvSBEVzTttHvERD741+pnZ8ANv0004MRL43QKPDlK9cGvNp6NZWZUBlbGXYxxng==",
+      "license": "MIT",
       "engines": {
         "node": ">=0.12.0"
       }
@@ -682,6 +686,7 @@
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
       "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+      "license": "MIT",
       "dependencies": {
         "is-number": "^7.0.0"
       },