2024 day 7

2024/07/runner.ts

@@ -0,0 +1,29 @@
+import { readFile } from "fs/promises";
+import { taskOne, taskTwo } from "./task";
+
+async function main() {
+    let lastArgument = process.argv.pop() as string;
+    let taskNumber = 1;
+    let isTest = false;
+
+    if (lastArgument === "test") {
+        isTest = true;
+        taskNumber = parseInt(process.argv.pop() as string);
+    } else {
+        taskNumber = parseInt(lastArgument)
+    }
+
+    const fileToLoad = isTest ? "test.in" : "solve.in";
+    const fileContents = await readFile(fileToLoad, "utf-8")
+
+    const lines = fileContents.split("\n");
+
+    if (taskNumber === 1) {
+        await taskOne(lines);
+    }
+    if (taskNumber === 2) {
+        await taskTwo(lines);
+    }
+}
+
+void main();

2024/07/task.ts

@@ -0,0 +1,33 @@
+export async function taskOne(input: string[]): Promise<void> {
+    let sum = 0
+    for (const i of input) {
+        const p = i.split(': ')
+        const nums = p[1].split(' ').map(Number)
+        const goal = Number(p[0])
+        if (t(goal, nums, 1, nums[0])) sum += goal
+    }
+    console.log(sum)
+
+    function t(goal: number, nums: number[], i: number, cur: number): boolean {
+        if (i >= nums.length) return cur == goal
+        if (cur > goal) return false
+        return t(goal, nums, i+1, cur + nums[i]) || t(goal, nums, i+1, cur * nums[i])
+    }
+}
+
+export async function taskTwo(input: string[]): Promise<void> {
+    let sum = 0
+    for (const i of input) {
+        const p = i.split(': ')
+        const nums = p[1].split(' ').map(Number)
+        const goal = Number(p[0])
+        if (t(goal, nums, 1, nums[0])) sum += goal
+    }
+    console.log(sum)
+
+    function t(goal: number, nums: number[], i: number, cur: number): boolean {
+        if (i >= nums.length) return cur == goal
+        if (cur > goal) return false
+        return t(goal, nums, i+1, cur + nums[i]) || t(goal, nums, i+1, cur * nums[i]) || t(goal, nums, i+1, Number(cur.toString() + nums[i].toString()))
+    }
+}

2024/README.md

@@ -1,5 +1,5 @@
 # 2024
-![](https://img.shields.io/badge/stars%20⭐-12-yellow)
+![](https://img.shields.io/badge/stars%20⭐-14-yellow)
 
 |Day|Language|Leaderboard (Part 1 / Part 2)|
 |--|--|--|
@@ -8,4 +8,5 @@
 |3|TypeScript|6107 / 2643|
 |4|TypeScript|2103 / 1654|
 |5|TypeScript|4252 / 4287|
-|6|TypeScript|527 / 726|
+|6|TypeScript|527 / 726|
+|7|TypeScript|291 / 177|

README.md

@@ -9,7 +9,7 @@ Whatever I feel like today. But it will most likely either be Java, Python, C++,
 
 <h3>2024</h3>
 
-![](https://img.shields.io/badge/stars%20⭐-12-yellow)
+![](https://img.shields.io/badge/stars%20⭐-14-yellow)
 
 |Day|Language|
 |--|--|
@@ -19,6 +19,7 @@ Whatever I feel like today. But it will most likely either be Java, Python, C++,
 |4|TypeScript|
 |5|TypeScript|
 |6|TypeScript|
+|7|TypeScript|
 
 
 <h3><a href="2023/README.md">2023</a></h3>