Hi,

Just in case you need to support decimal numbers, here is an extended version of Eimi's answer:

s/(-?\d+(\.\d+)?)/$1>0 ? "L" : ($1 == 0 ? "Q" : "S")/e;
or
s/(-?\d+(\.\d+)?)/qw(Q L S)[$1 <=> 0]/e;
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and add support of scientific notation:

s/(-?\d+(\.\d+)?([Ee][+-]?\d+)?)/ ...
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