How get max count with min key from list integer with linq written in one expression

Question

For example I have following list

var arr = new List<int> { 1, 4, 4, 4, 5, 3 };

I implemented as:

var res1 = from type in arr
   group type by type into ByrdTypes
   select new
   {
      Group = ByrdTypes.Key,
      Count = ByrdTypes.Count()
   }; 


var correct = from item in res1
   where item.Count == res1.Max(y => y.Count)
   select item;

var result = correct.Min(x => x.Group);

This is working solution. But how can I rewrite this in one Linq expression(query)? Thank you.

Answer 1

You could just use OrderBy or OrderByDescending then First or Last

var list = new List<int>() { 1, 4, 4, 4, 5, 3 };
var result = list
   .GroupBy(type => type)
   .Select(x => new {Group = x.Key, Count = x.Count()})
   .OrderByDescending(x => x.Count)
   .First();

// The above will get you the group with the highest count 

Console.WriteLine(result);

Output

{ Group = 4, Count = 3 }