day 7 woo

.aocrunner.json

@@ -93,16 +93,16 @@
     },
     {
       "part1": {
-        "solved": false,
+        "solved": true,
-        "result": null,
+        "result": "12553187650171",
         "attempts": [],
-        "time": null
+        "time": 21.47319
       },
       "part2": {
-        "solved": false,
+        "solved": true,
-        "result": null,
+        "result": "96779702119491",
         "attempts": [],
-        "time": null
+        "time": 782.404856
       }
     },
     {

README.md

@@ -17,7 +17,7 @@
 [![Day](https://badgen.net/badge/04/%E2%98%85%E2%98%85/green)](src/day04)
 [![Day](https://badgen.net/badge/05/%E2%98%85%E2%98%85/green)](src/day05)
 [![Day](https://badgen.net/badge/06/%E2%98%85%E2%98%85/green)](src/day06)
-![Day](https://badgen.net/badge/07/%E2%98%86%E2%98%86/gray)
+[![Day](https://badgen.net/badge/07/%E2%98%85%E2%98%85/green)](src/day07)
 ![Day](https://badgen.net/badge/08/%E2%98%86%E2%98%86/gray)
 ![Day](https://badgen.net/badge/09/%E2%98%86%E2%98%86/gray)
 ![Day](https://badgen.net/badge/10/%E2%98%86%E2%98%86/gray)
@@ -111,9 +111,9 @@ Both parts: 37138.281ms
 
 ```
 Day 07
-Time part 1: -
+Time part 1: 21.473ms
-Time part 2: -
+Time part 2: 782.405ms
-Both parts: -
+Both parts: 803.878ms
 ```
 
 ```
@@ -243,8 +243,8 @@ Both parts: -
 ```
 
 ```
-Total stars: 12/50
+Total stars: 14/50
-Total time: 37460.931ms
+Total time: 38264.809ms
 ```
 
 <!--/RESULTS-->

src/day07/README.md

@@ -0,0 +1,9 @@
+# 🎄 Advent of Code 2024 - day 7 🎄
+
+## Info
+
+Task description: [link](https://adventofcode.com/2024/day/7)
+
+## Notes
+
+...

src/day07/index.ts

@@ -0,0 +1,75 @@
+import run from "aocrunner"
+
+const parseInput = (rawInput: string) =>
+  rawInput.split("\n").map((line) => line.split(/[: ]+/).map(Number))
+
+const part1 = (rawInput: string) => {
+  const input = parseInput(rawInput)
+
+  return input.reduce((total, [target, ...values]) => {
+    const operators = [(a,b) => a * b, (a,b) => a + b]
+    const evaluate = (numbers: number[]) => {
+      if (numbers[0] > target) {
+        return false
+      }
+      if (numbers.length === 1) {
+        return numbers[0] === target
+      }
+      for (const op of operators) {
+        if (evaluate([op(numbers[0], numbers[1]), ...numbers.slice(2)])) { return true }
+      }
+    }
+    return total + (evaluate(values) ? target : 0)
+  }, 0)
+}
+
+const part2 = (rawInput: string) => {
+  const input = parseInput(rawInput)
+
+  return input.reduce((total, [target, ...values]) => {
+    const operators = [(a,b) => a * b, (a,b) => a + b, (a,b) => Number(`${a}${b}`)]
+    const evaluate = (numbers: number[]) => {
+      if (numbers[0] > target) {
+        return false
+      }
+      if (numbers.length === 1) {
+        return numbers[0] === target
+      }
+      for (const op of operators) {
+        if (evaluate([op(numbers[0], numbers[1]), ...numbers.slice(2)])) { return true }
+      }
+    }
+    return total + (evaluate(values) ? target : 0)
+  }, 0)
+}
+
+run({
+  part1: {
+    tests: [
+      {
+        input: `190: 10 19
+3267: 81 40 27
+83: 17 5
+156: 15 6
+7290: 6 8 6 15
+161011: 16 10 13
+192: 17 8 14
+21037: 9 7 18 13
+292: 11 6 16 20`,
+        expected: 3749,
+      },
+    ],
+    solution: part1,
+  },
+  part2: {
+    tests: [
+      // {
+      //   input: ``,
+      //   expected: "",
+      // },
+    ],
+    solution: part2,
+  },
+  trimTestInputs: true,
+  onlyTests: false,
+})