C# Linq根据逗号分隔列表中重复的标记数查询自定义订单

我有一个如下的清单

  ID        Tags                 Name
  1   acronym, address            one
  2   applet, abbr, embed         two
  3   iframe, abbr                three
  4   abbr, bgsound, bdo          four
  5   img, acronym                five

我想根据最重复的标签（如下所示）按顺序获取列表

  ID        Tags                 Name      
  2   applet, abbr, embed         two
  3   iframe, abbr                three      
  4   abbr, bgsound, bdo          four
  1   acronym, address            one
  5   img,  acronym               five

请帮助我如何使用LINQ中的c#lambda表达式获取它。

您只需要两个步骤：

根据重复次数对每个

标签进行分组。i、 e:
{“Key”：“abbr”，“Value”：3}

循环遍历数据，然后相应地获得每个

标记的最大
权重
。之后，您可以通过
OrderByDescending（p=>p.Weight）

已更新

以逗号分隔的列表重复标记

输出

[
  {"ID":2,"Tags":["applet","abbr","embed"],"Name":"two"},
  {"ID":3,"Tags":["iframe","abbr"],"Name":"three"},
  {"ID":4,"Tags":["abbr","bgsound","bdo"],"Name":"four"},
  {"ID":1,"Tags":["acronym","address"],"Name":"one"},
  {"ID":5,"Tags":["img","acronym"],"Name":"five"}
]

---

最重复的是什么意思？这里标记“abbr”重复了3次，首字母缩略词重复了2次基于最重复的标记我需要订单，您迄今为止尝试了什么？obj.OrderBy（item=>preferences.Contains（item.DocumentTags））.ToList（）；这里的首选项是我需要的顺序列表，例如：list=newlist（）{'abbr'，'acronym'}；但结果并没有达到预期效果。

var mostFrequentTag=myList.SelectMany（item=>item.Tags.GroupBy（tag=>tag.OrderByDescending（chunk=>chunk.Count（））.FirstOrDefault（）.Key这是否回答了您的问题？如果你需要任何帮助，请告诉我@Chintu
var orderedKeyMapping = data.SelectMany(p => p.Tags.Split(',')).Select(x => x.Trim())
                                .GroupBy(tag => tag)
                                .ToDictionary(g => g.Key.ToString(), g => g.Count())
                                .OrderByDescending(p => p.Value);
        var result = data.Select(p => new 
                                 { 
                                     SampleData = p,  
                                     Weight = orderedKeyMapping.FirstOrDefault(o => p.Tags.Split(',').Select(x => x.Trim()).Any(tag => o.Key.Equals(tag))).Value
                                 }).OrderByDescending(p => p.Weight)
                                   .Select(p => p.SampleData); 

        Console.WriteLine(JsonConvert.SerializeObject(result)); 

[
  {"ID":2,"Tags":["applet","abbr","embed"],"Name":"two"},
  {"ID":3,"Tags":["iframe","abbr"],"Name":"three"},
  {"ID":4,"Tags":["abbr","bgsound","bdo"],"Name":"four"},
  {"ID":1,"Tags":["acronym","address"],"Name":"one"},
  {"ID":5,"Tags":["img","acronym"],"Name":"five"}
]