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This is a great puzzle which spectacularly combines two previous golf outings. I took the route of least resistance -- instead of bothering with parenthesis, I used reverse-polish notation expressions. This significantly simplified things:
sub c {@r='';@r=map{$c=$_;map"$c $_",@r}@_ for 1..shift;@r} sub puzzle { ($x,$q,@l)=@_;@l=c$q,@l;@o=c$q-1,qw'+ - / *'; map{$n=$_;map{$t=$n.$_;{$t=~s!(\S+)\s+(\S+)\s*([-+*/])!"$1$3 $2"!ee& +&redo}; $t eq"$x "?$n.$_:()}@o}@l } ## example usage: puzzle ($total, $size, @numbers) ## print join $/, puzzle(24, 4, 6, 9); 6 6 6 6 + + + 6 6 6 9 / * * 6 6 9 6 - * + 6 6 9 6 / / * 6 9 6 6 * / /
That code is somewhat golfed, and damn messy, so I'm sure it can be significantly improved upon.
               s aamecha.s a..a\u$&owag.print

In reply to Re: Solving 24 puzzles by MeowChow
in thread Solving 24 puzzles by tigervamp

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