求教一个正则问题

Question

正则数据

Answer 1

 string text = @"1    0.2017 | |  ? | | 
2    0.1698踻 |  |  | | 
3    10.1966 | | 眧  | | ";
            var list = Regex.Matches(text,@"(?<=\d+\s*?)\d+(\.\d+)?").Cast<Match>().Select(a=>a.Value).ToList();
            /*
             *  [0] "0.2017" string
            [1] "0.1698" string
            [2] "10.1966" string             */

Answer 2

Regex reg = new Regex(@"\d*[.]?\d*");

Answer 3

Regex reg = new Regex(@"\d+(\.\d+)?");

Answer 4

Regex reg = new Regex(@"\d+(\.\d+)?"); 

Answer 5

new Regex("[.0-9]+", RegexOptions.Singleline)