charAt() returns char, how do i implicitly convert to int.?If you are suggesting casting, it still gives the ascii value. Do let me know what your thoughts exactly were.

charAt() returns char, how do i implicitly convert to int.?

Thanks yourself! My solution could use a lot of improvement; I'm just getting back into codewars and programming puzzles.

Streams can be very effective. I'd say they are mandatory knowledge for Java devs.

And to clarify my OP regarding Character.getNumericValue(), I like it because it's very explicit that you're retrieving a number value rather than implicitly converting from char to int with String.charAt().

Your Solution is really awesome, i really have to learn streams, i see this being used a lot in one line code format.

Thanks @ahjota.

I kind of like the use of Character.getNumericValue() here.

This line .mapToInt(value -> value) is redundant. The map() stage before it already converts the string array to an Integer, so you might as well mapToInt() directly.