Data commit

Task/Number-names/C-sharp/number-names.cs

@@ -0,0 +1,78 @@
+using System;
+
+class NumberNamer {
+    static readonly string[] incrementsOfOne =
+            { "zero",    "one",     "two",       "three",    "four",
+              "five",    "six",     "seven",     "eight",    "nine",
+              "ten",     "eleven",  "twelve",    "thirteen", "fourteen",
+              "fifteen", "sixteen", "seventeen", "eighteen", "nineteen" };
+
+    static readonly string[] incrementsOfTen =
+            { "",      "",      "twenty",  "thirty", "fourty",
+              "fifty", "sixty", "seventy", "eighty", "ninety" };
+
+    const string millionName = "million",
+                 thousandName = "thousand",
+                 hundredName = "hundred",
+                 andName = "and";
+
+
+    public static string GetName( int i ) {
+        string output = "";
+        if( i >= 1000000 ) {
+            output += ParseTriplet( i / 1000000 ) + " " + millionName;
+            i %= 1000000;
+            if( i == 0 ) return output;
+        }
+
+        if( i >= 1000 ) {
+            if( output.Length > 0 ) {
+                output += ", ";
+            }
+            output += ParseTriplet( i / 1000 ) + " " + thousandName;
+            i %= 1000;
+            if( i == 0 ) return output;
+        }
+
+        if( output.Length > 0 ) {
+            output += ", ";
+        }
+        output += ParseTriplet( i );
+        return output;
+    }
+
+
+    static string ParseTriplet( int i ) {
+        string output = "";
+        if( i >= 100 ) {
+            output += incrementsOfOne[i / 100] + " " + hundredName;
+            i %= 100;
+            if( i == 0 ) return output;
+        }
+
+        if( output.Length > 0 ) {
+            output += " " + andName + " ";
+        }
+        if( i >= 20 ) {
+            output += incrementsOfTen[i / 10];
+            i %= 10;
+            if( i == 0 ) return output;
+        }
+
+        if( output.Length > 0 ) {
+            output += " ";
+        }
+        output += incrementsOfOne[i];
+        return output;
+    }
+}
+
+
+class Program { // Test class
+    static void Main( string[] args ) {
+        Console.WriteLine( NumberNamer.GetName( 1 ) );
+        Console.WriteLine( NumberNamer.GetName( 234 ) );
+        Console.WriteLine( NumberNamer.GetName( 31337 ) );
+        Console.WriteLine( NumberNamer.GetName( 987654321 ) );
+    }
+}