Day7.Regex0.js

// 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.

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})
     */
    const re = /^(a|e|i|o|u).*\1$/gm;
    /*
     * Do not remove the return statement
     */
    return re;
}