Pattern : 2 DSA + MCQS

Given a string s, remove a vowel if it occurs individually, i.e. it does not have another vowel immediately adjacent to it.

If two or more vowels occur consecutively, leave all those vowels unchanged.

Return the resulting string.

A vowel is one of:

a, e, i, o, u

Example 1

Input:
s = "abecid"

Here:

• e is a single vowel → remove
• i is a single vowel → remove

Output:
"abcd"

Example 2

Input:
s = "beautiful"

If vowels occur consecutively, they should be preserved.

Input:
"ae b c ou"

The consecutive vowel groups ae and ou remain unchanged, while isolated vowels are removed.

Example 3

Input:
s = "cat"

a is a single vowel, so:

Output:
"ct"

Constraints

1 ≤ |s| ≤ 10^5

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