how to check if an `ArrayList<Long>` is in a...

# announcements

[elect]

how to check if an ArrayList<Long> is in ascending order? Something available in stlib?

[orangy]

Not out of the box, AFAIR.

[elect]

thanks anyway

[ilya.gorbunov]

Basically you need to compare each element with next to ensure it is not greater than the next one. You can pair elements that way with zipWithNext function, like:

list.zipWithNext().all { (a, b) -> a <= b }