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33 lines
787 B
JavaScript
33 lines
787 B
JavaScript
/*
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* Doctests
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*
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* > reverseWords('I Love JS')
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* 'JS Love I'
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* > reverseWords('Hello World')
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* 'World Hello'
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* > reverseWords('The Algorithms Javascript')
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* 'Javascript Algorithms The'
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* > reverseWords([])
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* ! TypeError
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* > reverseWords({})
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* ! TypeError
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* > reverseWords(null)
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* ! TypeError
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*/
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const reverseWords = (str) => {
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if (typeof str !== 'string') {
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throw new TypeError('The given value is not a string')
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}
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// Split string into words
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// Ex. "I Love JS" => ["I", "Love", "JS"]
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const words = str.split(' ')
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// reverse words
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// ["I", "Love", "JS"] => ["JS", "Love", "I"]
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const reversedWords = words.reverse()
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// join reversed words with space and return
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// ["JS", "Love", "I"] => "JS Love I"
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return reversedWords.join(' ')
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}
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export { reverseWords }
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