using System;

using System.Collections.Generic;

using System.Linq;

​

class NumberStatisticsCalculator

{

    static void Main()

    {

        while (true)

        {

            Console.WriteLine("\nNumber Statistics Calculator");

            Console.WriteLine("--------------------------");

            Console.WriteLine("Enter numbers (type 'done' when finished)");

​

            Queue<int> numberQueue = new Queue<int>();

            HashSet<int> uniqueNumbers = new HashSet<int>();

            List<int> numberList = new List<int>();

​

            // Input Handling

            while (true)

            {

                Console.Write("Enter number: ");

                string input = Console.ReadLine();

                if (input.ToLower() == "done") break;

​

                if (int.TryParse(input, out int number))

                {

                    numberQueue.Enqueue(number);

                    uniqueNumbers.Add(number);

                    numberList.Add(number);

                }

                else

                {

                    Console.WriteLine("Invalid input! Please enter a valid number or 'done'.");

                }

            }

​

            if (numberList.Count == 0)

            {

                Console.WriteLine("No numbers were entered. Exiting.");

                return;

            }

​

            // Sorting List for Median Calculation

            numberList.Sort();

​

            // Calculating Statistics

            int totalNumbers = numberList.Count;

            double average = numberList.Average();

            double median = CalculateMedian(numberList);

            int uniqueCount = uniqueNumbers.Count;

​

            // Frequency Calculation

            Dictionary<int, int> frequencyMap = new Dictionary<int, int>();

            foreach (int num in numberList)

            {

                if (frequencyMap.ContainsKey(num))

                    frequencyMap[num]++;

                else

                    frequencyMap[num] = 1;

            }

​

            // Display Results

            Console.WriteLine("\nStatistics:");

            Console.WriteLine("----------");

            Console.WriteLine($"Numbers entered: {totalNumbers}");

            Console.WriteLine($"Unique numbers: {uniqueCount}");

            Console.WriteLine($"Average: {average:F1}");

            Console.WriteLine($"Median: {median:F1}");

            Console.WriteLine($"Numbers in ascending order: {string.Join(", ", numberList)}");

​

            Console.WriteLine("\nFrequency Analysis:");

            foreach (var pair in frequencyMap)

            {

                Console.WriteLine($"{pair.Key} appears {pair.Value} time{(pair.Value > 1 ? "s" : "")}");

            }

​

            // Ask for another set

            Console.Write("\nWould you like to process another set? (y/n): ");

            string response = Console.ReadLine().ToLower();

            if (response != "y") break;

        }

​

        Console.WriteLine("Goodbye!");

    }

​

    static double CalculateMedian(List<int> sortedNumbers)

    {

        int count = sortedNumbers.Count;

        if (count % 2 == 1)

            return sortedNumbers[count / 2]; // Odd case

        else

            return (sortedNumbers[(count / 2) - 1] + sortedNumbers[count / 2]) / 2.0; // Even case

    }

}

​