Question

Currently I’m using TimeUnit.MILLISECONDS.toSeconds(valueInMillis) to check whether two millisecond values come from the same second. Can you recommend a faster algo for this operation?

Thanks.

Answer 1

This is the code behind TimeUnit.MILLISECONDS.toSecond(long d):

public long toSeconds(long d) { return d/(C3/C2); }

where C2,C3 are static constants. You can save a single division… In that case, I preferred your actual code, it’s easier to understand