Commit 3b9af46

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merge: added reduceRight & trim method (TheAlgorithms#961)

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+19

-18

lines changed

+19

-18

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Lines changed: 11 additions & 10 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,16 +1,17 @@`
	`1`	`+/**`
	`2`	`+ * @function reverseWords`
	`3`	`+ * @param {string} str`
	`4`	`+ * @returns {string} - reverse string`
	`5`	`+ */`
`1`	`6`	`const reverseWords = (str) => {`
`2`	`7`	`if (typeof str !== 'string') {`
`3`	`8`	`throw new TypeError('The given value is not a string')`
`4`	`9`	`}`
`5`		`- // Split string into words`
`6`		`- // Ex. "I Love JS" => ["I", "Love", "JS"]`
`7`		`- const words = str.split(' ')`
`8`		`- // reverse words`
`9`		`- // ["I", "Love", "JS"] => ["JS", "Love", "I"]`
`10`		`- const reversedWords = words.reverse()`
`11`		`- // join reversed words with space and return`
`12`		`- // ["JS", "Love", "I"] => "JS Love I"`
`13`		`- return reversedWords.join(' ')`
	`10`	`+`
	`11`	`+ return str`
	`12`	`+ .split(/\s+/) // create an array with each word in string`
	`13`	+ .reduceRight((reverseStr, word) => `${reverseStr} ${word}`, '') // traverse the array from last & create an string
	`14`	`+ .trim() // remove the first useless space`
`14`	`15`	`}`
`15`	`16`
`16`		`-export { reverseWords}`
	`17`	`+export default reverseWords`

Lines changed: 8 additions & 8 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,12 +1,6 @@`
`1`		`-import { reverseWords } from '../ReverseWords'`
`2`		`-`
`3`		`-describe('reverseWords', () => {`
`4`		`- it('expects to reverse words to return a joined word', () => {`
`5`		`- expect(reverseWords('I Love JS')).toBe('JS Love I')`
`6`		`- expect(reverseWords('Hello World')).toBe('World Hello')`
`7`		`- expect(reverseWords('The Algorithms Javascript')).toBe('Javascript Algorithms The')`
`8`		`- })`
	`1`	`+import reverseWords from '../ReverseWords'`
`9`	`2`
	`3`	`+describe('Testing the reverseWords function', () => {`
`10`	`4`	it.each`
`11`	`5`	`input`
`12`	`6`	`${123456}`
`@@ -21,4 +15,10 @@ describe('reverseWords', () => {`
`21`	`15`	`}).toThrow('The given value is not a string')`
`22`	`16`	`}`
`23`	`17`	`)`
	`18`	`+`
	`19`	`+ it('expects to reverse words to return a joined word', () => {`
	`20`	`+ expect(reverseWords('I Love JS')).toBe('JS Love I')`
	`21`	`+ expect(reverseWords('Hello World')).toBe('World Hello')`
	`22`	`+ expect(reverseWords('The Algorithms Javascript')).toBe('Javascript Algorithms The')`
	`23`	`+ })`
`24`	`24`	`})`

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