Grokking the Coding Interview: Patterns for Coding Questions
Ask Author
Back to course home

0% completed

Solution: Reverse Vowels
Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Problem Statement

Given a string s, reverse only all the vowels in the string and return it.

The vowels are 'a', 'e', 'i', 'o', and 'u', and they can appear in both lower and upper cases, more than once.

Example 1:

Input: s= "hello"
Output: "holle"

Example 2:

Input: s= "AEIOU"
Output: "UOIEA"

Example 3:

Input: s= "DesignGUrus"
Output: "DusUgnGires"

Constraints:

  • 1 <= s.length <= 3 * 10<sup>5</sup>
  • s consist of printable ASCII characters.

.....

.....

.....

Like the course? Get enrolled and start learning!

Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible