Fastest way to get the first n elements of a List into an Array
What is the fastest way to get the first n elements of a list stored in an array?
Considering this as the scenario:
Option 1:
String[] out = new String[n]; for[int i = 0; i< n; i++] out[i]=in.get[i];Option 2:
String[] out = [String[]] [in.subList[0, n]].toArray[];Option 3: Is there a faster way? Maybe with Java8-streams?
Option 1 Faster Than Option 2
Because Option 2 creates a new List reference, and then creates an n element array from the List [option 1 perfectly sizes the output array]. However, first you need to fix the off by one bug. Use < [not