Add 2024/day3/part1.js

2024/day3/part1.js

@@ -0,0 +1,18 @@
+#!/usr/bin/env node
+
+var content = require('fs').readFileSync(process.argv[2],'utf8');
+
+var mulregex = /mul\((\d{1,3}),(\d{1,3})\)/g
+var numregex = /\d+/g
+
+
+var muls = content.match(mulregex);
+var sum=0;
+for(var mul of muls) {
+ var digits = mul.match(numregex);
+ var values = digits.map(i=>parseInt(i));
+ //console.log({digits,values});
+ sum+=values[0]*values[1];
+}
+
+console.log('Result:',sum);