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86d333ee94
* chore: Switch to Node 20 + Vitest * chore: migrate to vitest mock functions * chore: code style (switch to prettier) * test: re-enable long-running test Seems the switch to Node 20 and Vitest has vastly improved the code's and / or the test's runtime! see #1193 * chore: code style * chore: fix failing tests * Updated Documentation in README.md * Update contribution guidelines to state usage of Prettier * fix: set prettier printWidth back to 80 * chore: apply updated code style automatically * fix: set prettier line endings to lf again * chore: apply updated code style automatically --------- Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com> Co-authored-by: Lars Müller <34514239+appgurueu@users.noreply.github.com>
46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
/*
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* Odd Number: https://simple.wikipedia.org/wiki/Odd_number
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* function to check if number is odd.
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* return true if number is odd.
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* else false
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*/
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/**
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* @function isOdd
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* @description -> Checking if number is odd using not divisibility by 2
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* If number is not divisible by 2 i.e remainder = 1, then it is odd
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* therefore, the function will return true
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*
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* If number is divisible by 2 i.e remainder != 1, then it is even
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* therefore, the function will return false
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* @param {number} number
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* @returns {boolean}
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*/
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const isOdd = (number) => Boolean(number % 2) // 1 -> true, 0 -> false
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/**
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* @function isOddBitwise
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* @description -> Checking if number is even using bitwise operator
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* Bitwise AND (&) compares the bits of the 32
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* bit binary representations of the number and
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* returns a number after comparing each bit:
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*
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* 0 & 0 -> 0
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* 0 & 1 -> 0
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* 1 & 0 -> 0
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* 1 & 1 -> 1
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*
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* For every odd numbers, the last binary bit will be 1
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* and for even numbers, the last binary bit will be 0.
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*
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* As the number is compared with one, all the
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* other bits except the last will become 0. The
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* last bit will be 0 for even numbers and 1 for
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* odd numbers.
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* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Bitwise_AND
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* @param {number} number
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* @returns {boolean}
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*/
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const isOddBitwise = (number) => Boolean(number & 1) // 1 -> true, 0 -> false
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export { isOdd, isOddBitwise }
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