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Think about Loose Coupling
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on Nov 08, 2007 at 21:46 UTC ( #649814=note: print w/replies, xml ) Need Help??

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  1. or download this
    use integer;@A=split//,<>;sub R{for$i(0..80){next if$A[$i];my%t=map{$_
    +R($A[$i]=$_)for grep{!$t{$_}}1..9;return$A[$i]=0}die@A}R
  2. or download this
     * Original Eccles & Toad solution (slightly modified)
     * Mark Byers reduced it to 187 bytes
     * Simon Stroh changed @A=split//,<> to $/=\1;@A=<> to reduce the prog
    +ram to 179 bytes
     * Mitsuru Kariya changed @A[map{ ... }]  to map@A[ ... ] to reduce th
    +e program to 178 bytes
     * Ton Hospel shortened the program to 121 bytes
  3. or download this
  4. or download this

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