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JavaScript

[NodeJS] 프로그래머스 베스트앨범 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/42579?language=javascript * @description */ const solution = (genres, plays) => { if (plays.length === 1) { return [0]; } const answer = []; const map = {}; const indexMap = {}; const countArr = [...new Set(genres)].map((v, i) => { indexMap[v] = i; return [v, 0]; }); if (countArr.length === 1) { const arr = []; for (let i = 0;.. 더보기
[NodeJS] 프로그래머스 완주하지 못한 선수 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/42576?language=javascript * @description */ const solution = (participant, completion) => { const map = {}; for (const p of participant) { map[p] = map[p] ? map[p] + 1 : 1; } for (const c of completion) { map[c]--; } for (const k in map) { if (map[k] > 0) { return k; } } }; 더보기
[NodeJS] 프로그래머스 음양 더하기 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/76501 * @description */ const solution = (absolutes, signs) => { return absolutes.reduce( (answer, curVal, idx) => answer + (signs[idx] ? curVal : curVal * -1), 0, ); }; 더보기
[NodeJS] 프로그래머스 없는 숫자 더하기 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/86051 * @description */ const solution = (numbers) => { return 45 - numbers.reduce((num, curNum) => num + curNum); }; 더보기
[NodeJS] 프로그래머스 기능개발 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/42586 * @description */ const solution = (progresses, speeds) => { const answer = []; const days = []; for (let i = 0; i < progresses.length; i++) { days.push(Math.ceil((100 - progresses[i]) / speeds[i])); } while (days.length) { let finishCnt = 1; let workingDay = days.shift(); while (true) { if (days[0] 더보기
[NodeJS] 백준 2981번 /** * @link https://www.acmicpc.net/problem/2981 * @description */ const readline = require('readline'); const rl = readline.createInterface({ input: process.stdin, output: process.stdout, }); const input = []; rl.on('line', (line) => { input.push(Number(line)); }).on('close', () => { const [, ...nums] = input; const result = solution(nums); console.log(result); process.exit(); }); const getGcd .. 더보기
[NodeJS] 프로그래머스 크레인 인형뽑기 게임 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/64061 * @description */ const solution = (board, moves) => { const stack = []; let answer = 0; for (let m of moves) { m--; for (let i = 0; i < board.length; i++) { const o1 = board[i][m]; if (!o1) { continue; } else { board[i][m] = 0; const o2 = stack.pop(); if (!o2) { stack.push(o1); } else if (o1 === o2) { answer += 2; } els.. 더보기
[NodeJS] 프로그래머스 키패드 누르기 /** * @link https://school.programmers.co.kr/learn/courses/30/lessons/67256?language=javascript */ const solution = (nums, hand) => { let answer = ''; const handNumMap = { left: 10, right: 11, }; const leftNums = [1, 4, 7]; const rightNums = [3, 6, 9]; const numsPosition = [ [1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 0, 11], ]; const updateAnswer = (num, h) => { handNumMap[h] = num; answer += h === '.. 더보기
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