chore(2023-04): cleanup

2023/day-04.js

@@ -1,45 +1,33 @@
 const fs = require('fs');
 
-var input = `Card 1: 41 48 83 86 17 | 83 86  6 31 17  9 48 53
-Card 2: 13 32 20 16 61 | 61 30 68 82 17 32 24 19
-Card 3:  1 21 53 59 44 | 69 82 63 72 16 21 14  1
-Card 4: 41 92 73 84 69 | 59 84 76 51 58  5 54 83
-Card 5: 87 83 26 28 32 | 88 30 70 12 93 22 82 36
-Card 6: 31 18 13 56 72 | 74 77 10 23 35 67 36 11`;
-var input = fs.readFileSync('./day-04-input.txt', 'utf8').trimEnd();
+const input = fs.readFileSync('./day-04-input.txt', 'utf8').trimEnd();
 
-// function solve(input) {
-//   console.log(input);
-//   let totalScore = 0;
-//   for (const line of input.split('\n')) {
-//     let [wins, nums] = line.split(': ')[1].split(' | ');
-//     wins = wins.match(/\d+/g).map(Number);
-//     nums = nums.match(/\d+/g).map(Number);
-//     console.log({ wins, nums });
-//     let nWins = nums.filter((n) => wins.includes(n)).length;
-//     console.log(nWins);
-//     totalScore += nWins && 2 ** (nWins - 1);
-//     console.log(totalScore);
-//   }
-//   console.log(totalScore);
-// }
-// solve(input);
-function solve(input) {
-  console.log(input);
+function solve1(input) {
+  let score = 0;
+  for (const line of input.split('\n')) {
+    let [wins, nums] = line.split(':')[1].split('|');
+    wins = wins.match(/\d+/g).map(Number);
+    nums = nums.match(/\d+/g).map(Number);
+    const nWins = nums.filter((n) => wins.includes(n)).length;
+    score += nWins && 2 ** (nWins - 1);
+  }
+  console.log(score);
+}
+solve1(input);
+
+function solve2(input) {
   const lines = input.split('\n');
   const nCards = lines.map(() => 1);
   for (let i = 0; i < lines.length; i++) {
     const line = lines[i];
-    let [wins, nums] = line.split(': ')[1].split(' | ');
+    let [wins, nums] = line.split(':')[1].split('|');
     wins = wins.match(/\d+/g).map(Number);
     nums = nums.match(/\d+/g).map(Number);
     const nWins = nums.filter((n) => wins.includes(n)).length;
-    console.log(nWins);
     for (let j = 0; j < nWins; j++) {
       nCards[i + 1 + j] += nCards[i];
     }
-    console.log(nCards);
   }
   console.log(nCards.reduce((acc, n) => acc + n));
 }
-solve(input);
+solve2(input);