Question

I am trying to parse a string something like this:

Input “20:00” – output would be “20”
Input “02:30” – output would be “2”
Input “00:30” – output would be “”.

This is how I have written, I don’t like the way I am doing it, looking for more efficient way to do this may be in a single scan. Any ideas?

private String getString(final String inputString)
{
    String inputString = "20:00"; // This is just for example       
    final String[] splittedString = inputString.split(":");
    final String firstString = splittedString[0];
    int i;
    for (i = 0; i < firstString.length(); i++)
    {
        if (firstString.charAt(i) != '0')
        {
            break;
        }
    }

    String outputString = "";
    if (i != firstString.length())
    {
        outputString = firstString.substring(i, firstString.length());
    }

    return outputString;
}

Answer 1

final String firstString = splittedString[0];
int value = Integer.parseInt(firstString);
return value == 0 ? "" : Integer.toString(value);