In perl, I would create an array of questions, each array element holding a reference to a hash:
my @questions
# a question from the Tasmanian Devil
push @questions, {id => 1, text => "Why for you want to bury me in the
+ cold, cold ground?, show => 1};
# etc.
Note here that QUESTION_NUM is just the index in the array plus 1.
Then inserting a question after question 10 is a simple matter of of a splice:
# Maxwell Smart?
my $new_q = {id => 9, text => "Shall we use the Cone of Silence?, show
+ => 1};
splice @questions, 9, 0, $new_q;
For references to other questions, just add a reference => $quest_ref element to the hash.
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