Day 7: Regular Expressions I

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, re, that matches any string s 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 s is >= 3.
• String s consists of lowercase letters only (i.e., [a-z]).

Output Format

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

Sample Input 0

1

bcd

Sample Output 0

1

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

1

abcd

Sample Output 1

1

false

Explanation 1

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

Sample Input 2

1

abcda

Sample Output 2

1

true

Explanation 2

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

Sample Input 3

1

abcdo

Sample Output 3

1

false

Explanation 3

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

Solution

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function regexVar() {
    /*
     * Declare a RegExp object variable named 're'
     * It must match a string that starts and ends with the same vowel (i.e., {a, e, i, o, u})
     */
    return new RegExp(/^([aeiou]).*\1$/);
    
    
    /*
     * Do not remove the return statement
     */
    return re;
}