Why does the majority of your post read like you don’t know these exist? https://en.wikipedia.org/wiki/Coaxial_power_connector

They’re fine, but as you mentioned in the first paragraph, lack of a standard is their main drawback. You could find two power supplies with the exact same connector but different voltage and polarity.

Of course it still matters, you just take the best case for n as n→∞, instead of the worst or average case.

Really annoys me that this is actually O(n log n) because for large enough n the merge sort will take longer than n*1e6 second. Randall should know better!

If anyone’s wondering why smoking isn’t allowed in the first place: https://youtu.be/eGzPO4UBnFo