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* ♻️ refactor: improving and fixing some code * Updated Documentation in README.md * ♻️ refactor: improving isLeapYear * 🐛 chore: back changes * 🐛 fix: using reduce instead forEach * 🐛 fix: using reduce instead forEach * 🐛 fix: removing duplicated code * 🐛 chore: removing .js --------- Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
19 lines
769 B
JavaScript
19 lines
769 B
JavaScript
/**
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* isLeapYear :: Number -> Boolean
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*
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* Check if a year is a leap year or not. A leap year is a year which has 366 days.
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* For the extra +1 day the February month contains 29 days instead of 28 days.
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*
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* The logic behind the leap year is-
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* 1. If the year is divisible by 400 then it is a leap year.
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* 2. If it is not divisible by 400 but divisible by 100 then it is not a leap year.
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* 3. If the year is not divisible by both 400 and 100 but divisible by 4 then a leap year.
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* 4. Other cases except the describing ones are not a leap year.
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*
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* @param {number} year
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* @returns {boolean} true if this is a leap year, false otherwise.
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*/
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export const isLeapYear = (year) => {
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return ((year % 400) === 0) || (((year % 100) !== 0) && ((year % 4) === 0))
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}
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