Leetcode 824

The idea of this solution is actualy pretty simple. We:

First add all the vowels to a map. We make a a string where we keep on appending "a" to it per word. Then we split S by spaces so we get all the words in an array called words.
Then we loop through words.
Inside the iteration we check whether the first letter of the current word is not a vowel we can move the first letter to the end.
After checking whether it is a consonant we can add "ma" + a because we are supposed to add "ma" + a to a word that begins with a vowel or a consonant.
Then we add "a" to a because as the problem statment says “Add one letter ‘a’ to the end of each word per its word index in the sentence, starting with 1.”

The Code:

func toGoatLatin(S string) string {
    words := strings.Split(S, " ")
    vowels := make(map[uint8]int)
    a := "a"
    
    vowels['a'] = 1; vowels['e'] = 1; vowels['i'] = 1;
    vowels['o'] = 1; vowels['u'] = 1
    
    vowels['A'] = 1; vowels['E'] = 1; vowels['I'] = 1; 
    vowels['O'] = 1; vowels['U'] = 1

    for i := 0; i < len(words); i++ {
        if vowels[words[i][0]] == 0 {
            words[i] = words[i][1:] + string(words[i][0])
        }
        words[i] += "ma" + a
        a += "a"
    }
    return strings.Join(words, " ")
}