Question

I have text document with this pattern:

Red fox got number1 socks: number2 and: number3

Red fox got number4 socks: number5 and: number6

Red fox got number7 socks: number8 and: number9
…

I need to extract all numberx from each line and put it in array like:

[number1,number2,number3]

[number4,number5,number6]

[number7,number8,number9]

i’m using C#.

thanks

Answer 1

class Program
{
    static void Main()
    {
        var input = File.ReadAllLines("test.txt");
        var result = input
            .Select(
                line => Regex.Matches(line, @"\d+")
                             .OfType<Match>()
                             .Select(m => m.Groups[0].Value)
            );
        foreach (string[] numbers in result)
        {
            Console.WriteLine(string.Join(",", numbers));
        }
    }
}

Given the following input file:

Red fox got 1 socks: 2 and: 3
Red fox got 4 socks: 5 and: 6
Red fox got 7 socks: 8 and: 9

the program prints:

1,2,3
4,5,6
7,8,9