26: Almost working radix

Author: Morasiu

challenges/26_Radix_Converter/RadixConverter.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Linq;
+
+class RadixConverter{
+  static void Main(string[] args){
+    Console.ForegroundColor = ConsoleColor.Green;
+    Console.CursorVisible = false;
+    Console.Title = "Radix Converter";
+    Console.WriteLine("<-----------Radix Converter----------->");
+    Console.WriteLine("Created by Morasiu (morasiu2@gmail.com)");
+    ChooseOption();
+    Console.ReadKey();
+  }
+
+  private static void ChooseOption() {
+    Console.WriteLine("Options:");
+    Console.WriteLine("1 - Convert from decimal");
+    Console.WriteLine("2 - Convert to decimal");
+
+    var isOptionCorrect = false;
+    do {
+      var key = Console.ReadKey().Key;
+      switch (key) {
+        case ConsoleKey.D1:
+          isOptionCorrect = true;
+          var number = GetNumber();
+          var radix = GetRadix();
+          var result = ConvertFromDecimal(number, radix);
+          Console.WriteLine(number + " in " + radix + " is: "  + result);
+          break;
+        case ConsoleKey.D2:
+          isOptionCorrect = true;
+          break;
+        default:
+          Console.Write("\b");
+          continue;
+      }
+    } while (!isOptionCorrect);
+  }
+
+  private static int GetNumber() {
+    Console.Write("\bNumber: ");
+    var input = Console.ReadLine();
+    if(!int.TryParse(input, out var number)) {
+      ExitWithError("ERROR: Wrong number");
+    }
+    return number;
+  }
+
+  private static int GetRadix() {
+    Console.Write("\bRadix: ");
+    var input = Console.ReadLine();
+    if(!int.TryParse(input, out var radix)) {
+      ExitWithError("ERROR: Wrong number");
+    }
+
+    if (radix > 36 || radix < 2)
+      ExitWithError("ERROR: Radix needs to be between 2 and 36");
+
+    return radix;
+  }
+
+  private static string ConvertFromDecimal(int number, int radix) {
+    var result = "";
+    var inputNumber = number;
+    var alphabet = Enumerable.Range('A', 26).Select(x => (char)x).ToArray();
+
+    while (inputNumber >= radix) {
+      var modal = inputNumber % radix;
+      if (modal >= 10)
+        result += alphabet[modal - 10];
+      else
+        result += modal;
+      inputNumber = inputNumber / radix;
+    }
+
+    if (inputNumber > 9)
+      result += alphabet[inputNumber - 10];
+    else
+      result += inputNumber;
+    return string.Concat(result.Reverse());
+  }
+
+  private static int ConvertToDecimal(string number, int radix) {
+    var result = 0;
+    var inputNumber = number;
+    var alphabet = Enumerable.Range('A', 26).Select(x => (char)x).ToArray();
+
+    foreach (var num in inputNumber) {
+      
+    }
+
+    return result;
+  }
+
+  private static void ExitWithError(string s) {
+    Console.WriteLine(s);
+    Environment.Exit(1);
+  }
+}