码迷,mamicode.com
首页 > 其他好文 > 详细

[Algorithm] Find The Vowels

时间:2019-06-21 23:54:49      阅读:130      评论:0      收藏:0      [点我收藏+]

标签:rac   The   character   cap   require   mod   dir   bsp   equal   

 

// --- Directions
// Write a function that returns the number of vowels
// used in a string. Vowels are the characters ‘a‘, ‘e‘
// ‘i‘, ‘o‘, and ‘u‘.
// --- Examples
// vowels(‘Hi There!‘) --> 3
// vowels(‘Why do you ask?‘) --> 4
// vowels(‘Why?‘) --> 0

 

function vowels(str) {
  const matchs = str.match(/[aeiou]/gi);
  return matchs ? matchs.length : 0;
}

module.exports = vowels;

  

const vowels = require(‘./index‘);

test(‘Vowels is a function‘, () => {
  expect(typeof vowels).toEqual(‘function‘);
});

test(‘returns the number of vowels used‘, () => {
  expect(vowels(‘aeiou‘)).toEqual(5);
});

test(‘returns the number of vowels used when they are capitalized‘, () => {
  expect(vowels(‘AEIOU‘)).toEqual(5);
});

test(‘returns the number of vowels used‘, () => {
  expect(vowels(‘abcdefghijklmnopqrstuvwxyz‘)).toEqual(5);
});

test(‘returns the number of vowels used‘, () => {
  expect(vowels(‘bcdfghjkl‘)).toEqual(0);
});

 

[Algorithm] Find The Vowels

标签:rac   The   character   cap   require   mod   dir   bsp   equal   

原文地址:https://www.cnblogs.com/Answer1215/p/11067274.html

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有 京ICP备13008772号-2
迷上了代码!