day 1

Author: Topener

day1/index.js

@@ -1,9 +1,52 @@
 export const part1 = ({ input }) => {
-    const result = 0;
+    let result = 0;
+    const regex = /\d/g;
+
+    input.forEach((row) => {
+        const matches = row.match(regex);
+        result += parseInt(matches[0] + matches[matches.length - 1]);
+    });
+
     return result;
 };
 
 export const part2 = ({ input }) => {
-    const result = 0;
+    let result = 0;
+    const regex = /(?:\d|one|two|three|four|five|six|seven|eight|nine)/g;
+
+    const numberMap = {
+        one: "1",
+        two: "2",
+        three: "3",
+        four: "4",
+        five: "5",
+        six: "6",
+        seven: "7",
+        eight: "8",
+        nine: "9",
+    };
+
+    input.forEach((row) => {
+        const matches = row.match(regex);
+        const firstNumber = matches[0];
+
+        const first = numberMap[firstNumber] || firstNumber;
+
+        let lastNumber = false;
+        let count = -1;
+
+        while (lastNumber === false) {
+            const testString = row.slice(count);
+            if (testString.match(regex)) {
+                lastNumber = testString.match(regex)[0];
+            }
+            count--;
+        }
+
+        const last = numberMap[lastNumber] || lastNumber;
+        const sum = parseInt(first + last);
+        result += sum;
+    });
+
     return result;
 };

day1/sample2.txt

@@ -0,0 +1,7 @@
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen

helper.js

@@ -20,17 +20,17 @@ export async function argsChecker(args) {
         process.exit(1);
     }
 
-    let dataType = "sample";
-    if (args[1] === "input") {
-        dataType = "input";
+    let dataType = "input";
+    if (args[1] === "sample") {
+        dataType = "sample";
     }
 
     return { dataType };
 }
 
 export async function partRunner({ part, input }) {
     console.time(part.name);
-    const result = part(input);
+    const result = await part({ input });
     console.timeEnd(part.name);
     console.log(result);
     return result;

index.js

@@ -13,6 +13,10 @@ if (!(await fileExists(`./${dayFile}/index.js`))) {
 const { part1, part2 } = await import(`./${dayFile}/index.js`);
 const data = await loadData({ day: dayFile, dataType });
 
-partRunner({ part: part1, input: data });
+await partRunner({ part: part1, input: data });
 
-partRunner({ part: part2, input: data });
+if (dataType === "sample" && (await fileExists(`./${dayFile}/sample2.txt`))) {
+    await partRunner({ part: part2, input: await loadData({ day: dayFile, dataType: "sample2" }) });
+} else {
+    await partRunner({ part: part2, input: data });
+}