public static bool IsPasswordValid(PasswordInfo passwordInfo)
{
var letterCount =
passwordInfo
.StoredPassword
.Count(letter => letter == passwordInfo.RepeatingLetter);
return(letterCount <= passwordInfo.RangeTo && letterCount >= passwordInfo.RangeFrom);
}
public static bool IsPasswordReallyValid(PasswordInfo passwordInfo)
{
var isNeededLetterAtFirstPosition =
passwordInfo.StoredPassword[passwordInfo.RangeFrom - 1] == passwordInfo.RepeatingLetter;
var isNeededLetterAtSecondPosition =
passwordInfo.StoredPassword[passwordInfo.RangeTo - 1] == passwordInfo.RepeatingLetter;
return((isNeededLetterAtFirstPosition && !isNeededLetterAtSecondPosition) ||
(isNeededLetterAtSecondPosition && !isNeededLetterAtFirstPosition));
}