编辑代码

using System;
using System.Collections.Generic;
using System.Linq;

public class HelloWorld
{
    public static void Main()
    {
       //JSRUN引擎2.0，支持多达30种语言在线运行，全仿真在线交互输入输出。
        Console.WriteLine("HELLO JSRUN     - from C# ");
        var list = new string[]{"1","2","-s","3"};
        Console.WriteLine(list.Count());
        Console.WriteLine(list.TakeWhile(_ => !_.StartsWith("-")).Count());
    }
}