If you convert my answer to use short variable names and remove the ?: you get 44 relevant chars 
#234567890#234567890#234567890#234567890#234567890#234567890
s/(\d+):(\d+)(,|$)/$h{$1}=$2;push(@a,$1)/ge;

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In reply to Re^3: better way to convert a string into an array and an hash by fergal
in thread better way to convert a string into an array and an hash by Miguel

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