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// @Title: 字符串中的第一个唯一字符 (First Unique Character in a String)
// @Author: 15816537946@163.com
// @Date: 2020-12-23 11:56:08
// @Runtime: 0 ms
// @Memory: 5.2 MB
func firstUniqChar(s string) int {
	tmp := [26]int{}

	for i := range s {
		tmp[s[i]-'a']++
	}

	for i := range s {
		if tmp[s[i]-'a'] == 1 {
			return i
		}
	}
	return -1

}