update everything

Assets/BitWise.cs

@@ -28,15 +28,20 @@ public class BitWise
         if (numberOfElementToSelect>totalNumberOfElement)
         {
             return result;
+        }        
+        if(numberOfElementToSelect == 0)
+        {
+            result.Add(0);
+            return result;
         }
 
-        long v = (1L << numberOfElementToSelect) - 1;
+        long v = (1L << numberOfElementToSelect) - 1L;
         long end = 1L << totalNumberOfElement;
         while (v < end)
         {
             result.Add(v);
-            long t = (v | (v - 1)) + 1;
-            v = t | ((((t & -t) / (v & -v)) >> 1) - 1);
+            long t = (v | (v - 1L)) + 1L;
+            v = t | ((((t & -t) / (v & -v)) >> 1) - 1L);
         }
 
         return result;