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private static IEnumerable<int> ExtractNumbersFromString(string s)
{
return Regex.Matches(s, @"\d+").Cast<Match>().Select(m => Convert.ToInt32(m.Value));
}
// 调用
foreach (var number in ExtractNumbersFromString("abc2345 345fdf678 jdhfg945"))
{
Console.WriteLine(number);
}