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GeezerVison is showing github.com — merge: optimize the countVowels algo (#886) · ex1234/JavaScript@68ca0ce

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`‎String/CountVowels.js‎`

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+7-11Lines changed: 7 additions & 11 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,8 +1,8 @@`
`1`	`1`	`/**`
`2`	`2`	`* @function countVowels`
`3`	`3`	`* @description Given a string of words or phrases, count the number of vowels.`
`4`		`- * @param {String} url - The input string`
`5`		`- * @return {Number} count`
	`4`	`+ * @param {String} str - The input string`
	`5`	`+ * @return {Number} - The number of vowels`
`6`	`6`	`* @example countVowels("ABCDE") => 2`
`7`	`7`	`* @example countVowels("Hello") => 2`
`8`	`8`	`*/`
`@@ -11,15 +11,11 @@ const countVowels = (str) => {`
`11`	`11`	`if (typeof str !== 'string') {`
`12`	`12`	`throw new TypeError('Input should be a string')`
`13`	`13`	`}`
`14`		`- const vowels = new Set(['a', 'e', 'i', 'o', 'u'])`
`15`		`- let count = 0`
`16`		`- for (let i = 0; i < str.length; i++) {`
`17`		`- const char = str[i].toLowerCase()`
`18`		`- if (vowels.has(char)) {`
`19`		`- count++`
`20`		`- }`
`21`		`- }`
`22`		`- return count`
	`14`	`+`
	`15`	`+ const vowelRegex = /[aeiou]/gi`
	`16`	`+ const vowelsArray = str.match(vowelRegex) \|\| []`
	`17`	`+`
	`18`	`+ return vowelsArray.length`
`23`	`19`	`}`
`24`	`20`
`25`	`21`	`export { countVowels }`

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