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Commit 6379d1b

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chore: Merge pull request #777 from indremak/add-next-power-of-two-algorithm
Add next power of two algorithm
2 parents 4a06588 + d636454 commit 6379d1b

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‎Bit-Manipulation/NextPowerOfTwo.js

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/**
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*
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* This script will find next power of two
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* of given number.
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* More about it:
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* https://www.techiedelight.com/round-next-highest-power-2/
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*
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*/
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export const nextPowerOfTwo = (n) => {
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if (n > 0 && (n & (n - 1)) === 0) return n
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let result = 1
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while (n > 0) {
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result = result << 1
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n = n >> 1
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}
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return result
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}
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import { nextPowerOfTwo } from '../NextPowerOfTwo'
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describe('NextPowerOfTwo', () => {
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it.each`
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input | result
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${0} | ${1}
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${1} | ${1}
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${2} | ${2}
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${3} | ${4}
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${5} | ${8}
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${125} | ${128}
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${1024} | ${1024}
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${10000} | ${16384}
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`('returns $result when is given $input', ({ input, result }) => {
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const res = nextPowerOfTwo(input)
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expect(res).toBe(result)
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})
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})

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