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solution0087.js
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solution0087.js
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/*
--------------- 7 Kyu - Vowel Count ------------------
*repeat - doing again as part of string methods series*
Instructions:
Return the number (count) of vowels in the given string.
We will consider a, e, i, o, u as vowels for this Kata (but not y).
The input string will only consist of lower case letters and/or spaces.
-------------
Sample Tests
const {assert} = require("chai");
describe("Vowels Count Tests",function(){
it("should return 5 for 'abracadabra'",function(){
assert.strictEqual(getCount("abracadabra"), 5) ;
});
});
--------------
PREP
Parameters: A string.
Return: how many of the vowels [aeiou] are present
Example: 'abracadabra' => 5
Psuedo Code:
-.match() regex
-/[aeiou]/g
-.length
Lessons learned (again):
-str.match(regex) returns 'null' when there are no matches! If you want to return '0' you need to use a ternary, as you did.
-Alternately :
(str.match(/[aeiou]/ig)||[]).length.
str.replace(/[^aeiou]/gi, '').length;
*/
function getCount(str) {
let regex = /[aeiou]/gi;
return !regex.test(str) ? 0 : str.match(regex).length
}