This is a series of programming challenges for beginners and experienced Caché programmers.
For an introduction : go to article https://community.intersystems.com/post/advent-code-2016-day1-no-time-t…
We are almost there : after this challenge, only 5 days left till the end of this advent of code (I cannot wait to get my life back !) .
The challenge of day 20 is about a list of integer ranges. Some ranges overlap, but there are also values that are outside any range.
You have to find out what is the lowest integer that is outside any range.
More explanation (there is not much more to say)



