98 lines
3.0 KiB
JavaScript
98 lines
3.0 KiB
JavaScript
const fs = require('fs');
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function readHands(filePath) {
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try {
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const data = fs.readFileSync(filePath, 'utf-8');
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console.log(`Reading hands from ${filePath}...`);
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return data.trim().split('\n').map(line => line.split(' '));
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} catch (err) {
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console.error(`Error reading file ${filePath}: ${err}`);
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throw err;
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}
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}
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function replaceFaceCards(hand) {
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return hand.replace(/T/g, 'a')
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.replace(/J/g, '1')
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.replace(/Q/g, 'c')
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.replace(/K/g, 'd')
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.replace(/A/g, 'e');
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}
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function calculateStrength(hand) {
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hand = replaceFaceCards(hand);
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const counts = hand.split('').reduce((acc, card) => {
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acc[card] = (acc[card] || 0) + 1;
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return acc;
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}, {});
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if ('1' in counts) {
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let maxCount = Math.max(...Object.values(counts));
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let maxCard = Object.keys(counts).find(card => counts[card] === maxCount && card !== '1');
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if (maxCard) {
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counts[maxCard] += counts['1'];
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delete counts['1'];
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}
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}
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const sortedCounts = Object.values(counts).sort((a, b) => b - a);
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console.log(`Hand: ${hand}, Counts: ${sortedCounts}`);
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if (sortedCounts.toString() === '5') return 10;
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if (sortedCounts.toString() === '1,4') return 9;
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if (sortedCounts.toString() === '2,3') return 8;
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if (sortedCounts.toString() === '1,1,3') return 7;
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if (sortedCounts.toString() === '1,2,2') return 6;
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if (sortedCounts.toString() === '1,1,1,2') return 5;
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if (sortedCounts.toString() === '1,1,1,1,1') return 4;
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throw new Error(`Invalid hand: ${hand}, Counts: ${sortedCounts}`);
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}
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function handKey(hand) {
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return calculateStrength(hand[0]);
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}
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function calculateTotalWinnings(filePath) {
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try {
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const hands = readHands(filePath);
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console.log("Sorting hands based on strength...");
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hands.sort((a, b) => handKey(b) - handKey(a));
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console.log("Calculating total winnings...");
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return hands.reduce((acc, [hand, bid], index) => {
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const winnings = (index + 1) * parseInt(bid, 10);
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console.log(`Hand: ${hand}, Rank: ${index + 1}, Bid: ${bid}, Winnings: ${winnings}`);
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return acc + winnings;
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}, 0);
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} catch (err) {
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console.error(`Error calculating winnings: ${err}`);
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throw err;
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}
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}
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function runTest(filePath, expected) {
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console.log(`Running test with ${filePath}...`);
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try {
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const totalWinnings = calculateTotalWinnings(filePath);
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console.assert(totalWinnings === expected, `Test failed, expected ${expected} but got ${totalWinnings}`);
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console.log(`Test passed: ${totalWinnings}`);
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} catch (err) {
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console.error(`Test failed: ${err}`);
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}
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}
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function main() {
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try {
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runTest("../test.txt", 5905);
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const result = calculateTotalWinnings("../input.txt");
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console.log(`Total result from input.txt: ${result}`);
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} catch (err) {
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console.error(`An error occurred: ${err}`);
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}
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}
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main();
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