Update data questions

Author: Lnleite

Data_Structures_Answers.md

@@ -15,5 +15,6 @@ Add your answers to the questions below.
    O(n)
 7. What is the runtime complexity of your optimized code in `names.py`?
    O(n log n)
+   I think my new code is now O(n)
 8. What is the space complexity of your optimized code in `names.py`?
    O(n)