正则表达式 : 6~16位字符，至少包含数字.字母.符号中的2种
fun verifyPassWord(string: String): Boolean{
val regex = "^(?!^(\\d+|[a-zA-Z]+|[~!@#$%^&*?]+)$)^[\\w~!@#$%^&*?]{6,16}$"
//val regex = "(?!^[0-9]+\$)(?!^[A-z]+\$)(?!^[^A-z0-9]+\$)^.{6,16}\$"
val pattern = Pattern.compile(regex)
val matcher = pattern.matcher(string);
return matcher.matches()
}