c# Extract multiple numbers from a string

Question

I'm trying to extract whole numbers of different length from a string with lots of formatting. The string in question could look like this:

string s = "Hallo (221122321 434334 more text3434 even mor,34343 343421.343sf 343";

The output I'm looking for is an array of:

{221122321,434334,3434,34343,343421,343,343}

decPL · Accepted Answer · 2013-11-04 13:51:57Z

24

var result = new Regex(@"\d+").Matches(s)
                              .Cast<Match>()
                              .Select(m => Int32.Parse(m.Value))
                              .ToArray();

edited Nov 4, 2013 at 13:51

answered Nov 4, 2013 at 13:23

decPL

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3 Comments

Matthew Watson Over a year ago

Excellent solution, but I'd change .OfType<Match> to .Cast<Match> to better indicate that I expect all the match items to actually be of type Match (they cannot be any other type).

Idle_Mind Over a year ago

Wouldn't you want to change m => m.Value to m => Int32.Parse(m.Value) so you have an array of int, instead of an array of string? (There are no quotes in the desired output.)

FunMatters Over a year ago

Very Elegant Solutions, now even better after the update !

Alan Moore · Accepted Answer · 2013-11-04 13:33:29Z

-1

Use a foreach loop like this:

string result = "";

foreach (string str in s)
{
    int number;
    if (int.TryParse(str, out number))
       result += s;
    else
       result += ",";
}

edited Nov 4, 2013 at 13:33

Alan Moore

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answered Nov 4, 2013 at 13:25

user790025

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1 Comment

Wagner Leonardi Over a year ago

This will not work, also will not result in a array.

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