hii

尝试Expresso工具

http://www.ultrapico.com/Expresso.htm [

hii

try Expresso tool

http://www.ultrapico.com/Expresso.htm[^]

因此，您拥有:

So, you have:

number out of number

数字是一个数字序列，至少包含一个数字:
正则表达式数字:\d
至少一个:+

现在您要提取这两个数字:(\d+)

全部放在一起(C#):

A number is a sequence of digits, with at least one digit:
Regex digit: \d
At least one: +

Now you my want to extract these two numbers: (\d+)

Putting all together (C#):

string pattern = @"(\d+) out of (\d+)";

获取全文(C#)中的所有匹配项:

Getting all matches in the whole text (C#):

string fullText = ...;
string pattern = @"(\d+) out of (\d+)";
int all = 0;
int sick = 0;
int count = 0;
foreach(var match in Regex.Matches(fullText, pattern).Cast<Match>())
{
    sick += int.Parse(match.Group[1].Value);
    all += int.Parse(match.Group[2].Value);
    count++;
}
Console.WriteLine("From {0} classes, {1}% are sick",
                   count, all > 0 ? sick / all : 0); 

干杯
安迪

Cheers
Andi