Finding a quick String split

gistfile1.txt

The pursuit of a quick way to split a string!!

Test 1: Compiled pattern running split(String)
Test 2: String -> char array -> building string -> adding to list on split char
Test 3: Some internal Java code I nabbed! Thanks OpenJDK!

```
Test 1 took: 933ms (1071811.3612 ops/s)
Test 2 took: 782ms (1278772.3785 ops/s)
Test 3 took: 310ms (3225806.4516 ops/s)
```

So, holy crap, so I looked into good old Java internals. OpenJDK had a "fastpath" in String#split where it would split a single char regex with some nice code. That code test 3. Seems like doing indexOf and substring is actually quicker than going through the chars. 

Very cool!! God I love looking and learning from Java internals.

Here's the method for anyone interested: <https://github.com/AdoptOpenJDK/openjdk-jdk11/blob/master/src/java.base/share/classes/java/lang/String.java#L2265>

310ms for 1 million iterations... 3.2 million iterations a second can be done with this little bit of internal code (cleaned up).