我的C＃循環在做什么錯

Question

好，所以我有2個清單

List<string> playlists 
List<string> sync

假設播放列表的內容是三個字符串

{"more and you", "and us", "more"}

同步的內容是這個

{"more and you-20120312", "more and you-20120314", "more and you-20120313",  "and us-20120313",  "and us-20120314",  "more-20120314",  "more-20120313", "more-20120312"}

基本上，我想做的是遍歷播放列表中的所有循環，找到相關的同步並打印出來，它們必須為3，否則我想為它們着色不同..所以這是到目前為止的代碼

        StringBuilder sb = new StringBuilder();
        sb.Append("<h2>Playlist Information</h2>");
        foreach (string play in playlists)
        {
            int counter = 0;
            foreach (string s in sync)
            {
                if (s.StartsWith(play))
                {
                    sb.Append("<p class=\"good\">" + s + "</p>");
                    counter++;
                } 
            }
        }

所以我希望最終的html看起來像這樣

<h2>Playlist Information</h2>
<p class=\"good\">more and you-20120312</p>
<p class=\"good\">more and you-20120313</p>
<p class=\"good\">more and you-20120314</p>
<p class=\"bad\">and us-20120313</p>
<p class=\"bad\">and us-20120314</p>
<p class=\"good\">more-20120312</p>
<p class=\"good\">more-20120313</p>
<p class=\"good\">more-20120314</p>

對於不滿足至少3個項目的項目不利...關於如何使用我的代碼實現此目標的任何想法

Answer 1

實現此目標非常容易-只需在檢查過程中建立另一個列表而不是計數器，然后檢查“內部列表”的大小即可。 我稱之為currentSyncSet：

    static void Main(string[] args)
    {
        List<string> playlists = new List<string>(){"more and you", "and us", "more"};
        List<string> sync = new List<string>() { "more and you-20120312", "more and you-20120314", "more and you-20120313", "and us-20120313", "and us-20120314", "more-20120314", "more-20120313", "more-20120312" };

        StringBuilder sb = new StringBuilder();
        sb.Append("<h2>Playlist Information</h2>\r\n");

        HashSet<string> finalSyncResult = new HashSet<string>();

        foreach (string play in playlists)
        {
            List<string> currentSyncSet = new List<string>();

            foreach (string s in sync)
            {
                if (s.StartsWith(play))
                {
                    currentSyncSet.Add(s);
                }
            }

            foreach (var syncset in currentSyncSet)
            {
                if (currentSyncSet.Count < 3)
                {
                    finalSyncResult.Add("<p class=\"bad\">" + syncset + "</p>");
                }
                else
                {
                    finalSyncResult.Add("<p class=\"good\">" + syncset + "</p>");
                }
            }
        }

        foreach (var result in finalSyncResult)
        {
            sb.Append(result + "\r\n");
        }

        Console.WriteLine(sb.ToString());

        Console.ReadKey();
    }

輸出為：

<h2>Playlist Information</h2>
<p class="good">more and you-20120312</p>
<p class="good">more and you-20120314</p>
<p class="good">more and you-20120313</p>
<p class="bad">and us-20120313</p>
<p class="bad">and us-20120314</p>
<p class="good">more-20120314</p>
<p class="good">more-20120313</p>
<p class="good">more-20120312</p>

問候

更新1：對不起，上一次，我忘記了，您不想重復條目-因此，我在此解決方案中添加了HashSet。