I had to recheck how regex worked. Took me an entire day to figure out the solution. I used int out of habit and had to redo all my code after realizing that I used the wrong data types. However, it was very fun to solve. Thanks.

Thank you for your quick answer, it does seem to be a double as I tried using it.

I think so. Otherwise, that would be an integer division and the result would be incorrect.

Is 1e6 considered a double then?

1e6 is the computer notation for 10^6 = 1,000,000.
So, multiplying a number by 1e6, then rounding it (with int) and dividing it by 1e6, has the effect of rounding it to 6 decimals.

Can someone explain what happens at the return statement? I was going to submit a similar solution, however my return statement just returned result. What does 1e6 mean?

Brilliant

Amazing solution, I didn't think of simply replacing the unsorted odd values with the sorted ones.