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- rename winning number form - separate lotto calculate(processor) logics - change winningnumbers type (from object to array) - remove logics from Lotto object
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,51 @@ | ||
| import { LOTTO_NUMBERS, LOTTO_WINNING_PRICE } from './constants.js'; | ||
|
|
||
| export default class LottoProcessor { | ||
| constructor(lottos, winningNumbers) { | ||
| this.lottos = lottos; | ||
| this.winningNumbers = winningNumbers.slice( | ||
| 0, | ||
| LOTTO_NUMBERS.WINNING_NUMBER_COUNT - 1 | ||
| ); | ||
| this.bonusNumber = winningNumbers[LOTTO_NUMBERS.WINNING_NUMBER_COUNT - 1]; | ||
| this.rankCounts = Array(5).fill(0); | ||
| this.earningRate = 0; | ||
| } | ||
|
|
||
| checkMatchingNums() { | ||
| this.lottos.forEach(lotto => { | ||
| const matchNumbers = [...lotto.numbers].filter(number => | ||
| this.winningNumbers.includes(number) | ||
| ); | ||
| const isMatchBonus = lotto.numbers.has(this.bonusNumber); | ||
| this.updateRankCounts(matchNumbers.length, isMatchBonus); | ||
| }); | ||
| } | ||
|
|
||
| updateRankCounts(matchCount, isMatchBonus) { | ||
| switch (matchCount) { | ||
| case 6: | ||
| this.rankCounts[0]++; // 1등 | ||
| break; | ||
| case 5: | ||
| isMatchBonus ? this.rankCounts[1]++ : this.rankCounts[2]++; // 2등 or 3등 | ||
| break; | ||
| case 4: | ||
| this.rankCounts[3]++; // 4등 | ||
| break; | ||
| case 3: | ||
| this.rankCounts[4]++; // 5등 | ||
| break; | ||
| default: | ||
| this.rankCounts; | ||
| } | ||
| } | ||
|
|
||
| calculateEarningRate(purchasedPrice) { | ||
| const totalProfit = this.rankCounts.reduce((sum, rankCount, idx) => { | ||
| return sum + rankCount * LOTTO_WINNING_PRICE[idx + 1]; | ||
| }, 0); | ||
|
|
||
| this.earningRate = (totalProfit / purchasedPrice - 1) * 100; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,48 +1,5 @@ | ||
| import { LOTTO_NUMBERS, LOTTO_WINNING_PRICE } from './constants.js'; | ||
| import { LOTTO_NUMBERS } from './constants.js'; | ||
|
|
||
| export function getRandomNumber() { | ||
| return Math.floor(Math.random() * LOTTO_NUMBERS.LOTTO_MAX_NUM) + 1; | ||
| } | ||
|
|
||
| export function compareNumbers(lottos, winningNumbers) { | ||
| checkMatchingNums(lottos, winningNumbers); | ||
| checkBonus(lottos, winningNumbers); | ||
| } | ||
|
|
||
| function checkMatchingNums(lottos, winningNumbers) { | ||
| let i = 0; | ||
| while (i++ < 6) { | ||
| const currNum = winningNumbers[i]; | ||
| lottos.forEach(lotto => { | ||
| if (lotto.numbers.has(currNum)) { | ||
| lotto.addMatchNumbers(); | ||
| } | ||
| }); | ||
| } | ||
| } | ||
|
|
||
| function checkBonus(lottos, winningNumbers) { | ||
| const bonusNumber = winningNumbers[7]; | ||
|
|
||
| lottos.forEach(lotto => { | ||
| if (lotto.numbers.has(bonusNumber)) { | ||
| lotto.setMatchBonus(); | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| export function countByRank(lottos, rankCounts) { | ||
| lottos.forEach(lotto => { | ||
| if (lotto.rank !== Infinity) { | ||
| rankCounts[lotto.rank - 1] += 1; | ||
| } | ||
| }); | ||
| } | ||
|
|
||
| export function calculateEarningRate(rankCounts, purchasedPrice) { | ||
| const totalProfit = rankCounts.reduce((sum, rankCount, idx) => { | ||
| return sum + rankCount * LOTTO_WINNING_PRICE[idx + 1]; | ||
| }, 0); | ||
|
|
||
| return (totalProfit / purchasedPrice - 1) * 100; | ||
| } |
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