Not much of a challenge, I'm afraid. Pretty straight forward split, split, join, sort and join again. A one liner in most modern languages, I suspect. In c# it would look like this:
string meeting(string s) { return "(" + string.Join(")(", s. ToUpper(). Split(';'). Select(n => n.Split(':')). Select(n => string.Join(":", n.Reverse())). OrderBy(n => n) ) + ")"; }
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Not much of a challenge, I'm afraid. Pretty straight forward split, split, join, sort and join again. A one liner in most modern languages, I suspect.
In c# it would look like this: