Data commit

Task/Increment-a-numerical-string/C-sharp/increment-a-numerical-string.cs

@@ -0,0 +1,13 @@
+string s = "12345";
+s = (int.Parse(s) + 1).ToString();
+// The above functions properly for strings >= Int32.MinValue and
+//  < Int32.MaxValue. ( -2147483648 to 2147483646 )
+
+// The following will work for any arbitrary-length integer string.
+//  (Assuming that the string fits in memory, leaving enough space
+//  for the temporary BigInteger created, plus the resulting string):
+using System.Numerics;
+string bis = "123456789012345678999999999";
+bis = (BigInteger.Parse(bis) + 1).ToString();
+// Note that extremely long strings will take a long time to parse
+//  and convert from a BigInteger back into a string.