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Make ArbitraryBase Unicode-aware #1299

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Merged
raklaptudirm merged 3 commits into TheAlgorithms:master from lionel-rowe:patch-1
Feb 23, 2023
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22 changes: 14 additions & 8 deletions Conversions/ArbitraryBase.js
View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -5,16 +5,19 @@
* @param {string} baseTwoCharacters Character set for the output base
* @returns {string}
*/
const convertArbitraryBase = (stringInBaseOne, baseOneCharacters, baseTwoCharacters) => {
if ([stringInBaseOne, baseOneCharacters, baseTwoCharacters].map(arg => typeof arg).some(type => type !== 'string')) {
const convertArbitraryBase = (stringInBaseOne, baseOneCharacterString, baseTwoCharacterString) => {
if ([stringInBaseOne, baseOneCharacterString, baseTwoCharacterString].map(arg => typeof arg).some(type => type !== 'string')) {
throw new TypeError('Only string arguments are allowed')
}
[baseOneCharacters, baseTwoCharacters].forEach(baseString => {
const charactersInBase = [...baseString]

const baseOneCharacters = [...baseOneCharacterString]
const baseTwoCharacters = [...baseTwoCharacterString]

for (const charactersInBase of [baseOneCharacters, baseTwoCharacters]) {
if (charactersInBase.length !== new Set(charactersInBase).size) {
throw new TypeError('Duplicate characters in character set are not allowed')
}
})
}
const reversedStringOneChars = [...stringInBaseOne].reverse()
const stringOneBase = baseOneCharacters.length
let value = 0
Expand All @@ -31,11 +34,11 @@ const convertArbitraryBase = (stringInBaseOne, baseOneCharacters, baseTwoCharact
const stringTwoBase = baseTwoCharacters.length
while (value > 0) {
const remainder = value % stringTwoBase
stringInBaseTwo = baseTwoCharacters.charAt(remainder) + stringInBaseTwo
stringInBaseTwo = baseTwoCharacters.at(remainder) + stringInBaseTwo
value /= stringTwoBase
}
const baseTwoZero = baseTwoCharacters.charAt(0)
return stringInBaseTwo.replace(new RegExp(`^${baseTwoZero}+`), '')
const baseTwoZero = baseTwoCharacters.at(0)
return stringInBaseTwo.replace(new RegExp(`^${baseTwoZero}+`, 'u'), '')
}

export { convertArbitraryBase }
Expand All @@ -48,3 +51,6 @@ export { convertArbitraryBase }

// > convertArbitraryBase('129', '0123456789', '01234567')
// '201'

// > convertArbitraryBase('98', '0123456789', '💝🎸🦄')
// '🎸💝🎸🦄🦄'

AltStyle によって変換されたページ (->オリジナル) /