Created
March 26, 2020 02:07
-
-
Save gie3d/bd2a1385536ceb1d77855be89638b0b7 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| const fs = require('fs'); | |
| fs.readFile('input', 'utf8', (err, contents) => { | |
| // console.log(contents); | |
| const data = parseData(contents); | |
| data.prices.sort((a, b) => a > b); | |
| const result = solve(data.prices, data.m); | |
| console.log(result); | |
| }); | |
| const solve = (prices, targetPrice) => { | |
| let result = null; | |
| for (let i = 0; i < prices.length - 1; i++) { | |
| let currentResult = compare(prices[i], targetPrice, prices.slice(i)); | |
| // console.log(currentResult); | |
| if (currentResult) { | |
| if (!result || currentResult.diff < result.diff) { | |
| result = currentResult; | |
| } | |
| // console.log('result: ', result); | |
| } | |
| } | |
| return result; | |
| }; | |
| const compare = (basePrice, targetPrice, prices) => { | |
| if (prices.length === 1) { | |
| if (basePrice + prices[0] === targetPrice) { | |
| return { | |
| diff: prices[0] - basePrice, | |
| left: basePrice, | |
| right: prices[0], | |
| }; | |
| } else { | |
| return null; | |
| } | |
| } else if (basePrice + prices[0] === targetPrice) { | |
| return { | |
| diff: prices[0] - basePrice, | |
| left: basePrice, | |
| right: prices[0], | |
| }; | |
| } else { | |
| return compare(basePrice, targetPrice, prices.slice(1)); | |
| } | |
| }; | |
| const parseData = contents => { | |
| let result = {}; | |
| try { | |
| const splitContents = contents.split(/\r?\n/); | |
| result.n = parseInt(splitContents[0]); | |
| result.prices = splitContents[1].split(' ').map(x => parseInt(x)); | |
| result.m = parseInt(splitContents[2]); | |
| } catch (e) { | |
| console.log('error: ', e); | |
| } | |
| return result; | |
| }; |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment