import random # sandwich ingredients and their associated calories ingredients = { "Bread": 100, "Ham": 150, "Lettuce": 10, "Tomato": 20, "Mayonnaise": 50, "Cheese": 120 } # prompt user for calorie range min_calories = int(input("Enter minimum calories: ")) max_calories = int(input("Enter maximum calories: ")) # calculate the minimum and maximum calories for the sandwich min_sandwich_calories = 2 * ingredients["Bread"] + min(ingredients.values()) * 2 max_sandwich_calories = 2 * ingredients["Bread"] + max(ingredients.values()) * 2 # check if the calorie range is valid if max_calories < min_sandwich_calories: print("Sorry, it is impossible to create a sandwich within the given calorie range.") else: # create the sandwich sandwich = ["Bread", "Bread"] sandwich_calories = 2 * ingredients["Bread"] while sandwich_calories < min_calories: # add random ingredient ingredient = random.choice(list(ingredients.keys())) sandwich.append(ingredient) sandwich_calories += ingredients[ingredient] while sandwich_calories <= max_calories: # add random ingredient ingredient = random.choice(list(ingredients.keys())) # check if the ingredient is the same as the previous one if len(sandwich) >= 3 and ingredient == sandwich[-2]: continue sandwich.append(ingredient) sandwich_calories += ingredients[ingredient] # check if the sandwich is already at the maximum calorie limit if sandwich_calories == max_sandwich_calories: break # add the last slice of bread sandwich.append("Bread") # print the sandwich and its total calories print("Your sandwich:", sandwich) print("Total calories:", sandwich_calories)

以下是转换后的 C# 代码，您可以直接将其复制粘贴到 Visual Studio 中进行编译运行：

using System;
using System.Collections.Generic;

namespace SandwichCalories
{
    class Program
    {
        static void Main(string[] args)
        {
            // sandwich ingredients and their associated calories
            Dictionary<string, int> ingredients = new Dictionary<string, int>()
            {
                { "Bread", 100 },
                { "Ham", 150 },
                { "Lettuce", 10 },
                { "Tomato", 20 },
                { "Mayonnaise", 50 },
                { "Cheese", 120 }
            };

            // prompt user for calorie range
            Console.Write("Enter minimum calories: ");
            int min_calories = int.Parse(Console.ReadLine());
            Console.Write("Enter maximum calories: ");
            int max_calories = int.Parse(Console.ReadLine());

            // calculate the minimum and maximum calories for the sandwich
            int min_sandwich_calories = 2 * ingredients["Bread"] + ingredients.Values.Min() * 2;
            int max_sandwich_calories = 2 * ingredients["Bread"] + ingredients.Values.Max() * 2;

            // check if the calorie range is valid
            if (max_calories < min_sandwich_calories)
            {
                Console.WriteLine("Sorry, it is impossible to create a sandwich within the given calorie range.");
            }
            else
            {
                // create the sandwich
                List<string> sandwich = new List<string> { "Bread", "Bread" };
                int sandwich_calories = 2 * ingredients["Bread"];

                while (sandwich_calories < min_calories)
                {
                    // add random ingredient
                    string ingredient = ingredients.Keys.ElementAt(new Random().Next(ingredients.Count));
                    sandwich.Add(ingredient);
                    sandwich_calories += ingredients[ingredient];
                }

                while (sandwich_calories <= max_calories)
                {
                    // add random ingredient
                    string ingredient = ingredients.Keys.ElementAt(new Random().Next(ingredients.Count));

                    // check if the ingredient is the same as the previous one
                    if (sandwich.Count >= 3 && ingredient == sandwich[sandwich.Count - 2])
                    {
                        continue;
                    }

                    sandwich.Add(ingredient);
                    sandwich_calories += ingredients[ingredient];

                    // check if the sandwich is already at the maximum calorie limit
                    if (sandwich_calories == max_sandwich_calories)
                    {
                        break;
                    }
                }

                // add the last slice of bread
                sandwich.Add("Bread");

                // print the sandwich and its total calories
                Console.WriteLine("Your sandwich: " + string.Join(", ", sandwich));
                Console.WriteLine("Total calories: " + sandwich_calories);
            }
        }
    }
}