計算最小/最大/平均ping響應

Question

因此，這是一個測試流行的RuneScape游戲的每台服務器的應用程序。 我在139台服務器上的每台上運行ping並將滯后值添加到數組。 在遍歷列表條目時，我可以計算每個服務器的平均，最小和最大延遲。

現在，在我的代碼中，當記錄到一台無法訪問的服務器時，最低延遲顯示為0。我不確定如果ping響應已達到超時並且將0發布到數組列表，該如何處理。

當服務器關閉時，我該怎么做才能避免將0作為最低ping？

using System;
using System.Net.NetworkInformation;
using System.Collections.Generic;

namespace RuneScape_Ping_Tool
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write(Environment.NewLine + "Start the test? (y/n): ");

            if (Console.Read() == char.Parse("y"))
            {
                Console.WriteLine();
                Ping();
            }
        }

        static void Ping()
        {
            List<int> lag = new List<int>();

            for (int server = 1; server <= 139; server++)
            {
                string url = "world" + server.ToString() + ".runescape.com";

                Console.WriteLine("Checking world " + server + "...");

                Ping ping = new Ping();
                PingReply reply = ping.Send(url);

                lag.Add(int.Parse(reply.RoundtripTime.ToString()));
            }

            for (int i = 1; i <= 139; i++)
            {
                Console.WriteLine("World " + i + ": " + lag[i - 1]);
            }

            int average = 0;
            int highest = 1;
            int lowest = 1000;

            int highestWorld = 0;
            int lowestWorld = 0;

            for (int i = 1; i <= 139; i++)
            {
                average = average + lag[i - 1];
            }

            for (int i = 1; i <= 139; i++)
            {
                if (highest < lag[i - 1])
                {
                    highest = lag[i - 1];
                    highestWorld = i;
                }
            }

            for (int i = 1; i <= 139; i++)
            {
                if (lowest > lag[i - 1])
                {
                    lowest = lag[i - 1];
                    lowestWorld = i;
                }
            }

            Console.WriteLine();
            Console.WriteLine("Average lag: " + average / 139);
            Console.WriteLine("Highest lag: " + highest + " in world " + highestWorld);
            Console.WriteLine("Lowest lag: " + lowest + " in world " + lowestWorld);

            Console.Write(Environment.NewLine + "Start the test? (y/n): ");

            if (Console.Read() == char.Parse("y"))
            {
                Console.WriteLine();
                Ping();
            }
        }
    }
}

Answer 1

您可以跳過零嗎？ 同樣，您也可以將所有計算放在一個循環中。

int n = 0 // number of data points

for (int i = 0; i < 139; ++i) {
  if (lag[i] == 0) {
    continue;  // skip 0 values
  }
  ++n;
  sum += lag[i];

  if (highest < lag[i]) {
    highest = lag[i];
    highestWorld = i + 1;
  }

  if (lowest > lag[i]) {
    lowest = lag[i];
    lowestWorld = i + 1;
  }

  average = sum / n;  // Note: you may want to round this.
}

Answer 2

您可以使用這些功能獲得最小值，最大值和平均值。

var nozeros = lag.Where(i => i > 0);
int lowest = nozeros.Min();
int lowestWorld = lag.IndexOf(lowest);
int highest = nozeros.Max();
int highestWorld = lag.IndexOf(highest);
int average = (int)nozeros.Average();

Answer 3

首先考慮並行運行所有內容（此處一次運行4個）：

var servers = Enumerable.Range(1, 139).Select(i => String.Format("world{0}.runescape.com",i));
var results = servers.AsParallel()
                     .WithDegreeOfParallelism(4)
                     .Select(server => new Ping().Send(server))
                     .ToList();

然后只收集有效結果，請注意使用PingReply.Status而不是檢查0 ：

var validResults = results.Where(r => r.Status == IPStatus.Success)
                          .Select(r => r.RoundtripTime);

這是您需要的信息：

Console.WriteLine("Total Results: {0}", results.Count());
Console.WriteLine("Valid Results: {0}", validResults.Count());
Console.WriteLine("Min from Valid: {0}", validResults.Min());
Console.WriteLine("Max from Valid: {0}", validResults.Max());
Console.WriteLine("Avg from Valid: {0}", validResults.Average());