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78 lines
1.4 KiB
Markdown
78 lines
1.4 KiB
Markdown
---
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id: 69306364df283fcaff2e1ada
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title: "Challenge 149: vOwElcAsE"
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challengeType: 28
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dashedName: challenge-149
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---
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# --description--
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Given a string, return a new string where all vowels are converted to uppercase and all other alphabetical characters are converted to lowercase.
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- Vowels are `"a"`, `"e"`, `"i"`, `"o"`, and `"u"` in any case.
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- Non-alphabetical characters should remain unchanged.
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# --hints--
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`vowelCase("vowelcase")` should return `"vOwElcAsE"`.
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```js
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assert.equal(vowelCase("vowelcase"), "vOwElcAsE");
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```
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`vowelCase("coding is fun")` should return `"cOdIng Is fUn"`.
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```js
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assert.equal(vowelCase("coding is fun"), "cOdIng Is fUn");
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```
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`vowelCase("HELLO, world!")` should return `"hEllO, wOrld!"`.
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```js
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assert.equal(vowelCase("HELLO, world!"), "hEllO, wOrld!");
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```
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`vowelCase("git cherry-pick")` should return `"gIt chErry-pIck"`.
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```js
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assert.equal(vowelCase("git cherry-pick"), "gIt chErry-pIck");
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```
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`vowelCase("HEAD~1")` should return `"hEAd~1"`.
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```js
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assert.equal(vowelCase("HEAD~1"), "hEAd~1");
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```
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# --seed--
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## --seed-contents--
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```js
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function vowelCase(str) {
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return str;
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}
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```
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# --solutions--
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```js
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function vowelCase(str) {
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const vowels = "aeiouAEIOU";
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let result = "";
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for (let char of str) {
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if (vowels.includes(char)) {
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result += char.toUpperCase();
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} else if (/[a-zA-Z]/.test(char)) {
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result += char.toLowerCase();
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} else {
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result += char;
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}
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}
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return result;
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}
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```
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