version 1.12, 2000/11/29 00:51:57
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version 1.25, 2001/05/31 22:36:18
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# file name (temp): default_homework |
# file name (temp): default_homework |
# used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run() |
# used by lonxml::xmlparse() as input variable $safeinit to Apache::run::run() |
# |
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# |
# |
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# Guy Albertelli |
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# |
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# 05/25/2001 H. K. Ng |
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# 05/31/2001 H. K. Ng |
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# |
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#init some globals |
$RANDOMINIT=0; |
$RANDOMINIT=0; |
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$pi=atan2(1,1)*4; |
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$rad2deg=180.0/$pi; |
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$deg2rad=$pi/180.0; |
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sub caparesponse_check { |
sub caparesponse_check { |
my $answer=''; #done |
my $answer=''; #done |
my $type=''; #done |
my $type=''; #done |
my $tol_type=''; # gets it's value from whether tol has a % or not done |
my $tol_type=''; # gets it's value from whether tol has a % or not done |
my $tol=''; #done |
my $tol=''; #done |
my $sig=''; |
my $sig=''; #done lowerbnd,upperbnd |
my $sig_lbound=''; |
my $sig_lbound=''; #done |
my $sig_ubound=''; |
my $sig_ubound=''; #done |
my $ans_fmt=''; |
my $ans_fmt=''; |
my $units=''; |
my $units=''; #done |
my $calc=''; |
my $calc=''; |
my ($response,$expr)=@_; |
my ($response,$expr)=@_; |
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Line 67 sub caparesponse_check {
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Line 75 sub caparesponse_check {
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elsif ($result =='10') { $result='SUB_RECORDED'; } |
elsif ($result =='10') { $result='SUB_RECORDED'; } |
elsif ($result =='11') { $result='BAD_FORMULA'; } |
elsif ($result =='11') { $result='BAD_FORMULA'; } |
elsif ($result =='12') { $result='WANTED_NUMERIC'; } |
elsif ($result =='12') { $result='WANTED_NUMERIC'; } |
else {$result = "ERROR: Unknown Result: $result";} |
else {$result = "ERROR: Unknown Result:$result:$@:";} |
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return "$result:<br />Error $error:<br />Answer $answer:<br />Response $response:<br />$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$units<br />"; |
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} |
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return "$result:$error:$answer:$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$units"; |
sub caparesponse_check_list { |
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my ($response,$expr)=@_; |
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my $result=''; |
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my $aresult=''; |
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my $current_answer; |
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my $answer = eval $expr.';return $answer'; |
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my (@list) = eval $answer; |
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my (@responselist)=split /,/,$response; |
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my $unit=''; |
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$result.="Final response :$responselist['-1']:<br />"; |
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if ( $responselist['-1']=~ /(.*[^\s])\s+([^\s]+)/ ) { |
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$responselist['-1']=$1; |
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$unit=$2; |
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} |
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$result.="Final response :$responselist['-1']:<br />"; |
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$unit=~s/\s//; |
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my $i=0; |
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my $awards=''; |
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for ($i=0; $i<@list;$i++) { |
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if ($unit eq '') { |
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$aresult=&caparesponse_check($responselist[$i], |
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$expr.';my $answer='.$list[$i].';'); |
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} else { |
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$aresult=&caparesponse_check($responselist[$i]." $unit", |
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$expr.';my $answer='.$list[$i].';'); |
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} |
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my ($temp)=split /:/, $aresult; |
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$awards.="$temp,"; |
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$result.=$aresult; |
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} |
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chop $awards; |
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return "$awards:<br />$result"; |
} |
} |
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sub tex { |
sub tex { |
Line 80 sub tex {
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Line 122 sub tex {
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} |
} |
} |
} |
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sub var_in_tex { |
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if ( $external::target eq "tex" ) { |
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return @_[0]; |
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} else { |
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return ""; |
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} |
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} |
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sub web { |
sub web { |
if ( $external::target eq "tex" ) { |
if ( $external::target eq "tex" ) { |
return @_[1]; |
return @_[1]; |
Line 92 sub web {
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Line 142 sub web {
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} |
} |
} |
} |
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sub html { |
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if ( $external::target eq "web" ) { |
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return @_[0]; |
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} |
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} |
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sub problem { |
sub problem { |
return '1'; |
return '1'; |
} |
} |
Line 108 sub random {
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Line 164 sub random {
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return $result; |
return $result; |
} |
} |
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sub abs { abs(shift) } |
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sub sin { sin(shift) } |
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sub cos { cos(shift) } |
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sub exp { exp(shift) } |
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sub int { int(shift) } |
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sub log { log(shift) } |
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sub atan2 { atan2($_[0],$_[1]) } |
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sub sqrt { sqrt(shift) } |
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sub tan { sin($_[0]) / cos($_[0]) } |
sub tan { sin($_[0]) / cos($_[0]) } |
sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); } |
#sub atan { atan2($_[0], 1); } |
sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) ); } |
#sub acos { atan2(sqrt(1 - $_[0] * $_[0]), $_[0] ); } |
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#sub asin { atan2($_[0], sqrt(1- $_[0] * $_[0]) ); } |
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sub log10 { log($_[0])/log(10); } |
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sub factorial { |
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my $input = int(shift); |
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return "Error - unable to take factorial of an negative number ($input)" if $input < 0; |
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return "Error - factorial result is greater than system limit ($input)" if $input > 170; |
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return 1 if $input == 0; |
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my $result = 1; |
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for (my $i=2; $i<=$input; $i++) { $result *= $i } |
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return $result; |
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} |
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sub html { |
sub sgn { |
if ( $external::target eq "web" ) { |
return -1 if $_[0] < 0; |
return @_[0]; |
return 0 if $_[0] == 0; |
} |
return 1 if $_[0] > 0; |
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} |
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sub min { |
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my @sorted = sort { $a <=> $b || $a cmp $b } @_; |
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return shift @sorted; |
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} |
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sub max { |
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my @sorted = sort { $a <=> $b || $a cmp $b } @_; |
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return pop @sorted; |
} |
} |
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sub roundto { |
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my ($input,$n) = @_; |
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return sprintf('%.'.$n.'f',$input); |
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} |
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sub to_string { |
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my ($input,$n) = @_; |
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return sprintf('%'.$n,$input) if $n ne ""; |
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return sprintf($input) if $n eq ""; |
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} |
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sub sub_string { |
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my ($str,$start,$len) = @_; |
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return substr($str,$start-1,$len); |
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} |
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sub pow {return $_[0] ** $_[1]; } |
sub pow {return $_[0] ** $_[1]; } |
sub ceil {return (($_[0]-int($_[0]))== 0.0) ? $_[0] : (int($_[0])+ 1); } |
sub ceil {return (($_[0]-int($_[0]))== 0.0) ? $_[0] : (int($_[0])+ 1); } |
Line 146 sub map {
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Line 249 sub map {
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} |
} |
} |
} |
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sub capa_id { return } |
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sub problem { return } |
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sub name{ |
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my $fullname = &EXT('environment.lastname').', '.&EXT('environment.firstname').' '.&EXT('environment.middlename'); |
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$fullname = "" if $fullname eq ", "; |
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$fullname =~ s/\%2d/-/; |
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return $fullname; |
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} |
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sub student_number { |
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my $id = &EXT('environment.id'); |
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$id = '' if $id eq ""; |
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return $id; |
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} |
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sub class { |
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my $course = &EXT('course.description'); |
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$course = '' if $course eq ""; |
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return $course; |
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} |
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sub sec { |
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my $sec = &EXT('request.course.sec'); |
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$sec = '' if $sec eq ""; |
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return $sec; |
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} |
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sub open_date { |
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my @dc = split(/\s+/,localtime(&EXT('resource.0.opendate'))); |
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return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969); |
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my @hm = split(/:/,$dc[3]); |
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my $ampm = " am"; |
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if ($hm[0] > 12) { |
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$hm[0]-=12; |
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$ampm = " pm"; |
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} |
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return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm; |
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} |
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sub due_date { |
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my @dc = split(/\s+/,localtime(&EXT('resource.0.duedate'))); |
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return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969); |
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my @hm = split(/:/,$dc[3]); |
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my $ampm = " am"; |
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if ($hm[0] > 12) { |
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$hm[0]-=12; |
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$ampm = " pm"; |
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} |
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return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm; |
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# return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$dc[3]; |
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} |
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sub answer_date { |
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my @dc = split(/\s+/,localtime(&EXT('resource.0.answerdate'))); |
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return '' if ($dc[0] eq "Wed" and $dc[2] == 31 and $dc[4] == 1969); |
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my @hm = split(/:/,$dc[3]); |
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my $ampm = " am"; |
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if ($hm[0] > 12) { |
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$hm[0]-=12; |
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$ampm = " pm"; |
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} |
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return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$hm[0].':'.$hm[1].$ampm; |
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# return $dc[0].', '.$dc[1].' '.$dc[2].', '.$dc[4].' at '.$dc[3]; |
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} |
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sub array_moments { |
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my @input=@_; |
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my (@output,$N); |
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$N=scalar (@input); |
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$output[0]=$N; |
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if ($N <= 1) { |
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$output[1]=$input[0]; |
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$output[1] = "Input array not defined" if ($N == 0); |
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$output[2]="variance undefined for N<=1"; |
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$output[3]="skewness undefined for N<=1"; |
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$output[4]="kurtosis undefined for N<=1"; |
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return @output; |
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} |
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my $sum=0; |
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foreach my $line (@input) { |
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$sum+=$line; |
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} |
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$output[1] = $sum/$N; |
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my ($x,$sdev,$var,$skew,$kurt) = 0; |
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foreach my $line (@input) { |
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$x=$line-$output[1]; |
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$var+=$x**2; |
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$skew+=$x**3; |
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$kurt+=$x**4; |
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} |
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$output[2]=$var/($N-1); |
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$sdev=sqrt($output[2]); |
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if ($sdev == 0) { |
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$output[3]="inf-variance=0"; |
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$output[4]="inf-variance=0"; |
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return @output; |
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} |
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$output[3]=$skew/($sdev**3*$N); |
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$output[4]=$kurt/($sdev**4*$N)-3; |
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return @output; |
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} |
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sub choose { |
sub choose { |
my $num = $_[0]; |
my $num = $_[0]; |
return $_[$num]; |
return $_[$num]; |
} |
} |
#$external::randomseed=time; |
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#$a=2; |
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#$b=2; |
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#$c=2; |
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#&map(1,\$a,\$b,\$c,3,4,5); |
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#print $a."\n".$b."\n"; |
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