What should be the input parameter of a C# method?

Question

.NET

There is a task "signal decoding", but that's bad luck.
Most of the input parameters are clear, but there is one that does not lend itself to me (highlighted):
Decode(0));
decode(123);
decode(1.23);
Decode(1...2..3);
What do I need to specify as the input parameter of the method?
Thanks in advance!

Exercise :

Answer 1

1 - the originals are not visible - is this definitely C#?
2 - what? suddenly Mono?
3 - if this is a test for a vacancy - perhaps there is a check for readiness for other people's mistakes - "1 ... 2..3" for example?

then the solution is simple

using System;
using System.Linq;

namespace do_something_I_don_t_know_what
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine(Decode("1...2..3"));
        }

        static string Decode(object a)
        {
            return new string (
                (a as string)
                .ToCharArray()
                .Where(c => char.IsDigit(c))
                .ToArray()
                );
        }
    }
}

you can come up with something else ad infinitum .. but in my opinion it makes no sense

Answer 2

apparently it needs a range from version 8
ranges

Answer 3

It looks like the input data is of different types. The latter is most likely string.

Answer 4

Should be . There are 2 dots everywhere, this is the Range type, it has not yet been added to the language and is still being tested, you need to check the "preview" flag in the project settings, where the language version is indicated. Most likely, a simple call to IntelliSense via "ctrl +." and viduha will do everything for you (perhaps) Just out of interest, who gives such tasks at all? Where are they from? And for the future, before writing to the forums - read the errors, in them in 99% of cases the answer. Decode(1..2..3);

Answer 5

Perhaps you need to remove everything that is not a number or all the points and you get "123"

Answer 6

It looks like going beyond the limit of the bit grid for a 10-bit number. Leave only numbers. Convert to integer and make & 1023