Data commit

Task/Range-expansion/C-sharp/range-expansion-1.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.RegularExpressions;
+
+class Program
+{
+    static void Main(string[] args)
+    {
+        var rangeString = "-6,-3--1,3-5,7-11,14,15,17-20";
+        var matches = Regex.Matches(rangeString, @"(?<f>-?\d+)-(?<s>-?\d+)|(-?\d+)");
+        var values = new List<string>();
+
+        foreach (var m in matches.OfType<Match>())
+        {
+            if (m.Groups[1].Success)
+            {
+                values.Add(m.Value);
+                continue;
+            }
+
+            var start = Convert.ToInt32(m.Groups["f"].Value);
+            var end = Convert.ToInt32(m.Groups["s"].Value) + 1;
+
+            values.AddRange(Enumerable.Range(start, end - start).Select(v => v.ToString()));
+        }
+
+        Console.WriteLine(string.Join(", ", values));
+    }
+}

Task/Range-expansion/C-sharp/range-expansion-2.cs

@@ -0,0 +1,31 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace RangeExpansion {
+  internal static class StringExtensions {
+    internal static IEnumerable<int> ExpandRange(this string s) {
+      return s.Split(',')
+        .Select(rstr => {
+          int start;
+          if (int.TryParse(rstr, out start))
+            return new {Start = start, End = start};
+          var istr = new string(("+-".Any(_ => rstr[0] == _)
+            ? rstr.Take(1).Concat(rstr.Skip(1).TakeWhile(char.IsDigit))
+            : rstr.TakeWhile(char.IsDigit)
+            ).ToArray());
+          rstr = rstr.Substring(istr.Length + 1, (rstr.Length - istr.Length) - 1);
+          return new {Start = int.Parse(istr), End = int.Parse(rstr)};
+        }).SelectMany(_ => Enumerable.Range(_.Start, _.End - _.Start + 1));
+    }
+  }
+
+  internal static class Program {
+    private static void Main() {
+      const string RANGE_STRING = "-6,-3--1,3-5,7-11,14,15,17-20";
+      var values = RANGE_STRING.ExpandRange().ToList();
+      var vstr = string.Join(", ", values.Select(_ => _.ToString()));
+      Console.WriteLine(vstr);
+    }
+  }
+}