[Leetcode] [JavaScript] [Python] Reverse vowels of a String

Source: Internet
Author: User

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 vowels in the string are arranged in reverse order, and the vowels in English are a, E, I, O, and U, and contain the case.

Two pointers, one at the head and one at the tail, and the vowel on the exchange two pointers to the contents.

I've been learning Python recently and will try to practice it with Python.

Js:

1 /**2 * @param {string} s3 * @return {string}4  */5 varReversevowels =function(s) {6     varI, res = S.split ("), start = 0, end = s.length-1,7Avowels = [' A ', ' e ', ' I ', ' o ', ' u '];8      while(Start <end) {9          while(Start < end &&!)Isvowel (S[start]))Tenstart++; One          while(Start < end &&!)Isvowel (S[end])) Aend--; -         if(Start!==end) - swap (start, end); thestart++; -end--; -     } -     returnRes.join (' '); +      -     functionIsvowel (Char){ +         if(Avowels.indexof (Char. toLowerCase ())!==-1){ A             return true; at         } -         return false; -     } -     functionSwap (I, j) { -         vartemp =Res[i]; -Res[i] =Res[j]; inRES[J] =temp; -     } to};

Python:

1 classsolution (object):2     defReversevowels (self, s):3res =list (s)4vowels = ['a','e','I','o','u']5start = 0; end = Len (s)-16          whileStart <End:7              whileStart < end and(S[start].lower () not inchvowels):8Start + = 19              whileStart < end and(S[end].lower () not inchvowels):TenEnd-= 1 One             if(Start! =end): ATMP =Res[start] -Res[start] =Res[end] -Res[end] =tmp theStart + = 1; End-= 1 -         return "'. Join (RES)

[Leetcode] [JavaScript] [Python] Reverse vowels of a String

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