completed till 06/07

exercises/06_ticket_management/03_resizing/src/lib.rs

@@ -12,6 +12,6 @@ mod tests {
         // Can you guess what the new capacity will be?
         // Beware that the standard library makes no guarantees about the
         // algorithm used to resize the vector, so this may change in the future.
-        assert_eq!(v.capacity(), todo!());
+        assert_eq!(v.capacity(), 4);
     }
 }