Increment a string with both letters and numbers

Question

I have a string which i need to increment by 1 The string has both characters and numeric values.

The string layout i have is as follows \"MD00494\"

How woul

Answer 1

Here's my solution:

string str = Console.ReadLine();
string digits = new string(str.Where(char.IsDigit).ToArray());
string letters = new string(str.Where(char.IsLetter).ToArray());
string newStr;
int number;

if (!int.TryParse(digits, out number)) 
{
  Console.WriteLine("Something weird happened");
}
if (digits.StartsWith("0"))
{
  newStr = letters + (++number).ToString("D5");
}
else
{
  newStr = letters + (++number).ToString();
}

Try it!