What is faster: many ifs, or else if?

Question

I\'m iterating through an array and sorting it by values into days of the week.

In order to do it I\'m using many if statements. Does it make any differ

Answer 1

I doubt that a micro optimization like this will make a measurable difference in your code.

Your sorting algorithm is more likely to be the source of a performance problem. Which sorting algorithm you choose will be critical, not many "ifs" versus "else if".

UPDATE:

The points made by others about "else if" being a better choice, due to its early exit and exclusive logic characteristics, suggest that it should be preferred over "if" in this case.

But the point about algorithm choice still stands - unless your data set is very small.

It's obvious that O(log n) would be better than O(n^2), but size of dataset matters as well. If you have only a few elements, you might not notice the difference. In that case, coding an inefficient method in the cleanest, most readable, most easily understandable at a glance could be your best bet.