345. Reverse vowels of a String

Write a function that takes a string as input and reverse only the vowels of a string.

Example 1: Given s = "Hello", Return "Holle".

Example 2: Given s = "Leetcode", Return "Leotcede".

The answer to the bright blind baby's eyes must be widely publicized, "excerpted from Https://leetcode.com/discuss/99073/1-2-lines-python-ruby":

class solution (Object):     def Reversevowels (self, s):         """         : Type s:str        : rtype:str        "        " "= Re.findall ('(? i) [ AEIOU]', s)        return re.sub ('(? i) [Aeiou]'  Lambda m:vowels.pop (), s)

Use regular expressions to find all vowels

eg:s= ' Hello ' then vowels = [' e ', ' O ']

Re.sub's function prototype is: re.sub (Pattern, REPL, string, count)

Where the second function is the replacement string;

The fourth parameter refers to the number of replacements. The default is 0, which means that each match is replaced

345. Reverse vowels of a String