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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. namespace CSharpProject {
  6.     /// <summary>
  7.     /// 単なる数値で表された金額を硬貨、札で表現しなおすクラス。
  8.     /// </summary>
  9.     public class Mony {
  10.         //内部用の機械的アクセス用。
  11.         private int[] datas = new int[9];
  12.  
  13.         public int One { get { return datas[0]; } private set { datas[0] = value; } }
  14.         public int Five { get { return datas[1]; } private set { datas[1] = value; } }
  15.         //10
  16.         public int Ten { get { return datas[2]; } private set { datas[2] = value; } }
  17.         public int Fifty { get { return datas[3]; } private set { datas[3] = value; } }
  18.         public int Hundred { get { return datas[4]; } private set { datas[4] = value; } }
  19.         public int FiveHundred { get { return datas[5]; } private set { datas[5] = value; } }
  20.         //1,000
  21.         public int Thousand { get { return datas[6]; } private set { datas[6] = value; } }
  22.         public int FiveThousand { get { return datas[7]; } private set { datas[7] = value; } }
  23.         //10,000
  24.         public int TehThousand { get { return datas[8]; } private set { datas[8] = value; } }
  25.  
  26.         private int intValue;
  27.  
  28.         /// <summary>
  29.         /// このクラスを初期化します。
  30.         /// </summary>
  31.         /// <param name="value">金額</param>
  32.         public Mony(int value) {
  33.             ParseInt(value);
  34.         }
  35.  
  36.         /// <summary>
  37.         /// intをパースしてMonyクラスにセットする
  38.         /// </summary>
  39.         /// <param name="num"></param>
  40.         private void ParseInt(int num) {
  41.             //Array.Clear(datas, 0, datas.Length);
  42.             intValue = num;
  43.  
  44.             for (int i = 1; i <= Math.Min(4, (int)Math.Log10(num) + 1); i++) {
  45.                 var value = GetDigitValue(num, i);
  46.                 if (value >= 5) {
  47.                     datas[(i - 1) * 2] = value - 5;
  48.                     datas[(i - 1) * 2 + 1]++;
  49.                 } else {
  50.                     datas[(i - 1) * 2] = value;
  51.                 }
  52.             }
  53.  
  54.             TehThousand = num / 10000;
  55.         }
  56.  
  57.         /// <summary>
  58.         /// intの任意の桁の値を取得します。
  59.         /// </summary>
  60.         /// <param name="digit">下から数えた取得したい桁数</param>
  61.         /// <param name="num">取得する元の数値</param>
  62.         private int GetDigitValue(int num, int digit) {
  63.             int numDighit = (int)Math.Log10(num) + 1;
  64.             if (numDighit < digit || digit < 0)
  65.                 throw new ArgumentException("digit");
  66.             for (int i = numDighit; i > digit; i--) {
  67.                 //消去したい桁数
  68.                 int deleateDigiht = (int)Math.Pow(10, (int)Math.Log10(num));
  69.                 //ex:4321→4→4000
  70.                 num -= num / deleateDigiht * deleateDigiht;
  71.             }
  72.             if (digit == 1)
  73.                 return num;
  74.             return num / (int)Math.Pow(10, digit - 1);
  75.         }
  76.  
  77.         /// <summary>
  78.         /// この構造体をintに変換します。
  79.         /// </summary>
  80.         /// <returns></returns>
  81.         public int ToInt32() {
  82.             return intValue;
  83.         }
  84.  
  85.     }
  86.  
  87.     class Program {
  88.         public static void Main() {
  89.             //お釣り
  90.             var m = new Mony(1234986);
  91.             var s = string.Format("10,000yen>{0},5,000yen>{1},1,000yen>{2},500yen>{3},100yen{4},50yen>{5},10yen>{6},5yen>{7},1yen>{8}",
  92.                 m.TehThousand, m.FiveThousand, m.Thousand, m.FiveHundred, m.Hundred, m.Fifty,m.Ten, m.Five, m.One);
  93.             Console.WriteLine(s);
  94.         }
  95.     }
  96. }
  97.  
Success #stdin #stdout 0.04s 37000KB
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stdin
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Standard input is empty
stdout
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10,000yen>123,5,000yen>0,1,000yen>4,500yen>1,100yen4,50yen>1,10yen>3,5yen>1,1yen>1
https://ideone.com/1Whjc
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
secret

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