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[REBOL] Re: More on expressions

From: sunandadh:aol at: 2-Feb-2003 6:37

Just to demonstrate how sticking to the rules may not lead to an elegant solution.... The median is the one in the middle -- provided the first one is lower and the third one is higher. If those conditions aren't true, throw the numbers in the air and try again: until [set [a b c] random/secure reduce [a b c] all [a <= b b <= c]] b There is no explicit "decision" just a termination condition whose precise timing is indeterminate. No "selection" activity either -- random shuffling isn't selection. (We'd of course put this in a func with local variables to stop messing up the caller's three variables. I'm not entirely unreasonable when it comes to coding). :-) Sunanda.