private static string TextToNumbers(string text)
{
var sb = new StringBuilder();
foreach (var letter in text)
{
sb.Append(LettersDictionary.GetNumber(letter));
}
return(sb.ToString());
}
private static string NumbersToText(string numbers)
{
var sb = new StringBuilder();
for (var i = 0; i < numbers.Length; i++)
{
if (numbers[i] < '1' || numbers[i] > '7')
{
sb.Append(LettersDictionary.GetLetter(numbers.Substring(i, 2)));
i++;
}
else
{
sb.Append(LettersDictionary.GetLetter(numbers[i].ToString()));
}
}
return(sb.ToString());
}
