824. Goat Latin

Title Description :

Give you a sentence consisting of several words sentence , Words are separated by spaces . Each word consists only of uppercase and lowercase letters .
Please translate the sentence into “ Goat Latin （Goat Latin, Return to sentence Sentence after conversion to goat Latin .

The rules of goat Latin are as follows ：

• If the word begins with a vowel （‘a’, ‘e’, ‘i’, ‘o’, ‘u’）, Add... After the word "ma".
  • for example , word “apple” Turn into “applema” .
• If the word begins with a consonant （ namely , Non vowel letter ）, Remove the first character and put it at the end , Then add "ma".
  • for example , word “goat” Turn into “oatgma” .
• According to the index of words in sentences , Add at the end of the word the same number of letters as the index ’a’, Index from 1 Start .
  • for example , Add... After the first word “a” , Add... After the second word “aa” , And so on .

Example 1：
Input ：sentence = “I speak Goat Latin”
Output ：“Imaa peaksmaaa oatGmaaaa atinLmaaaaa”
Example 2：
Input ：sentence = “The quick brown fox jumped over the lazy dog”
Output ：“heTmaa uickqmaaa rownbmaaaa oxfmaaaaa umpedjmaaaaaa overmaaaaaaa hetmaaaaaaaa azylmaaaaaaaaa ogdmaaaaaaaaaa”

Answer key :

func toGoatLatin(sentence string) string {
    
	assistStr := "aeiouAEIOU"
	words := strings.Split(sentence, " ")
	ansSlice:=make([]string,len(words))
	//  Traverse words, Corresponding i, It is also after the change word stay ansSlice Position in slice 
	for i, word := range words {
    
		index := i + 1
		if strings.Contains(assistStr, string(word[0])) {
    
			word = addA(word+"ma", index)
			ansSlice[i] = word
			continue
		} else {
    
			word = addA(word[1:]+string(word[0])+"ma", index)
			ansSlice[i] = word
			continue
		}
	}
	return strings.Join(ansSlice," ")
}

// word After adding a,index How much is the , Add several “a”
func addA(word string, index int) string {
    
	for i := 0; i < index; i++ {
    
		word = word + "a"
	}
	return word
}

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