OppaiAnalysis Rev.2

OppaiAnalysis.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace OppaiAnalysis
{
    static class OppaiAnalysis
    {
        static public double cupDiameterFromUnderbustAndCup(double under, string cup)
        {
            var cupInt = ToCharacterCode(cup)[0] - 64;
            var initSize = 8.3; //8.3 or 9.7
            var diffCup = 0.98; //0.98 or 0.847

            return initSize + diffCup * ((under - 65.0) / 5.0 - 1.0) + diffCup * (cupInt - 1.0);
        }

        static public double cupVolumeFromCupDiameter(double diameter)
        {
            return 2.0 / 3.0 * Math.PI * Math.Pow((diameter / 2.0), 3);
        }

        static public double cup2cm(string cup)
        {
            if (cup == "AAA") { return 5; }
            else if (cup == "AA") { return 7.5; }
            else if (cup == "ZZ") { return 75; }
            else if (cup == "ZZZ") { return 77.5; }

            return ToCharacterCode(cup)[0] - ToCharacterCode('A') * 2.5 + 10;
        }

        static public string cm2cup(double cm)
        {
            if( cm <= 6.25) {return "AAA";}
            else if( cm <= 8.75){ return "AA";}
            else if ( cm >= 77.5) {return "ZZZ";}
            else if ( cm >= 75) { return "ZZ";}

            return FromCharacterCode(Math.Floor((cm - 10)/2.5) + 65).ToString();
        }

        /// <summary>
        /// 文字列の各文字に対応する文字コードを返す
        /// </summary>
        /// <param name="str"></param>
        /// <returns></returns>
        static private List<int> ToCharacterCode(string str)
        {
            var output = new List<int>();
            foreach (var c in str.ToCharArray())
            {
                output.Add(Convert.ToInt32(c));
            }

            return output;
        }

        static private int ToCharacterCode(char c)
        {
            return Convert.ToInt32(c);
        }

        /// <summary>
        /// 整数値 n の文字コードの1文字からなる文字列を与える．
        /// </summary>
        /// <param name="n"></param>
        /// <returns></returns>
        static private char FromCharacterCode <T>(T n)
            where T : struct
        {
            return Convert.ToChar(Convert.ToInt32(n));
        }
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace OppaiAnalysis
{
    class Program
    {
        static void Main(string[] args)
        {
            var under = 75;
            var cups = new List<string>(
                new string[] { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" }
                );

            cups.ForEach(cup =>
                {
                    var vol = OppaiAnalysis.cupVolumeFromCupDiameter(
                                 OppaiAnalysis.cupDiameterFromUnderbustAndCup(under, cup)
                               );
                    Console.WriteLine(vol);
                });


            cups.ForEach(cup =>
            {
                var dia = OppaiAnalysis.cupDiameterFromUnderbustAndCup(under, cup);
                Console.WriteLine(dia);
            });
        }
    }
}