hello monks, help me in that 
%output_pts =(7=>"raja",2=>"ananth",3=>"guru",4=>"uvaaraj");
@ptkeys = keys %output_pts;
@sortedkeys = sort numeric_sort @ptkeys;
print "\n@ptkeys";
sub numeric_sort {
print " $a,$b ";
$a cmp $b; }

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=========================================================== explai the procedure involved in this sorting...i mean what basis it is comparing with the values... actually arguments are stored in @_ inside subroutine..how does $a and $b gets the value.....is it like bubble sort....

In reply to help in sort by uva

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