题目：

题解：

func wordPattern(pattern string, s string) bool {word2ch := map[string]byte{}ch2word := map[byte]string{}words := strings.Split(s, " ")if len(pattern) != len(words) {return false}for i, word := range words {ch := pattern[i]if word2ch[word] > 0 && word2ch[word] != ch || ch2word[ch] != "" && ch2word[ch] != word {return false}word2ch[word] = chch2word[ch] = word}return true
}