C#按键值对JSON分组

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
    public static void Main()
    {
        string json = @"{
            'fruit': 'apple',
            'color': 'red',
            'shape': 'round',
            'animal': 'dog',
            'food': 'pizza',
            'drink': 'coffee'
        }";

        Dictionary<string, string> jsonData = JsonConvert.DeserializeObject<Dictionary<string, string>>(json);

        var groupedData = jsonData.GroupBy(x => x.Value)
                                  .ToDictionary(x => x.Key, x => x.Select(y => y.Key).ToList());

        foreach (var group in groupedData)
        {
            Console.WriteLine("Key: " + group.Key);
            Console.WriteLine("Values: " + string.Join(", ", group.Value));
            Console.WriteLine();
        }
    }
}

Key: apple
Values: fruit

Key: red
Values: color

Key: round
Values: shape

Key: dog
Values: animal

Key: pizza
Values: food

Key: coffee
Values: drink