DAY 7: Regular Expressions I | Hackerrank Solution | 10 Days Of Javascript

DAY 7: Regular Expressions I

Hackerrank Solution 10 Days Of  Javascript

Objective

In this challenge, we use a Regular Expression to evaluate a string. Check out the attached tutorial for more details.

Task

Complete the function in the editor below by returning a RegExp object, , that matches any string  that begins and ends with the same vowel. Recall that the English vowels are a, e, i, o, and u.

Constraints

• The length of string  is  .
• String  consists of lowercase letters only (i.e., [a-z]).

Output Format

The function must return a RegExp object that matches any string  beginning with and ending in the same vowel.

Sample Input 0

bcd

Sample Output 0

false

Explanation 0

This string starts with (and ends in) a consonant, so it cannot start and end with the same vowel.

Sample Input 1

abcd

Sample Output 1

false

Explanation 1

This string ends in a consonant, so it cannot start and end with the same vowel.

Sample Input 2

abcda

Sample Output 2

true

Explanation 2

This string starts and ends with the same vowel (a).

Sample Input 3

abcdo

Sample Output 3

false

Explanation 3

This string starts with the vowel a but ends in the vowel o.

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SOLUTION

function regexVar() { let re = /^([aeiou]).+\1$/; return re; } function main() { const re = regexVar(); const s = readLine(); console.log(re.test(s)); }

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