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Diff for /loncom/homework/default_homework.lcpm between versions 1.116 and 1.131

version 1.116, 2006/09/29 20:55:33 version 1.131, 2008/03/06 02:20:05
Line 58  use strict; Line 58  use strict;
     sub get_next_permutation {      sub get_next_permutation {
  if ($num_left == $total) {   if ($num_left == $total) {
     $num_left--;      $num_left--;
     return @order;      return \@order;
  }   }
   
  # Find largest index j with a[j] < a[j+1]   # Find largest index j with a[j] < a[j+1]
Line 92  use strict; Line 92  use strict;
  }   }
   
  $num_left--;   $num_left--;
  return(@order);   return(\@order);
     }      }
           
     sub get_permutations_left {      sub get_permutations_left {
Line 126  sub check_commas { Line 126  sub check_commas {
     return 1;      return 1;
 }  }
   
   
 sub caparesponse_check {  sub caparesponse_check {
     my ($answer,$response)=@_;      my ($answer,$response)=@_;
     #not properly used yet: calc      #not properly used yet: calc
Line 151  sub caparesponse_check { Line 152  sub caparesponse_check {
     }      }
     if ($response=~ /^\s|\s$/) {      if ($response=~ /^\s|\s$/) {
  $response=~ s:^\s+|\s+$::g;   $response=~ s:^\s+|\s+$::g;
  &LONCAPA_INTENAL_DEBUG("Removed ws now :$response:");   &LONCAPA_INTERNAL_DEBUG("Removed ws now :$response:");
     }      }
   
     &LONCAPA_INTERNAL_DEBUG(" type is $type ");      #&LONCAPA_INTERNAL_DEBUG(" type is $type ");
     if ($type eq 'cs' || $type eq 'ci') {      if ($type eq 'cs' || $type eq 'ci') {
  #for string answers make surec all places spaces occur, there is    #for string answers make sure all places spaces occur, there is 
         #really only 1 space, in both the answer and the response          #really only 1 space, in both the answer and the response
  $answer=~s/ +/ /g;   $answer=~s/ +/ /g;
  $response=~s/ +/ /g;   $response=~s/ +/ /g;
Line 165  sub caparesponse_check { Line 166  sub caparesponse_check {
  $response=~s/[\s,]//g;   $response=~s/[\s,]//g;
     }      }
     if ($type eq 'float' && $unit=~/\$/) {      if ($type eq 'float' && $unit=~/\$/) {
  if ($response!~/^\$/)  { return "NO_UNIT: Missing \$ "; }   if ($response!~/^\$|\$$/)  { return ('NO_UNIT', undef); }
  $response=~s/\$//g;   $response=~s/\$//g;
     }      }
     if ($type eq 'float' && $unit=~/\,/ && (&check_commas($response)<0)) {      if ($type eq 'float' && $unit=~/\,/ && (&check_commas($response)<0)) {
Line 175  sub caparesponse_check { Line 176  sub caparesponse_check {
     $unit=~s/[\$,]//g;      $unit=~s/[\$,]//g;
     if ($type eq 'float') { $response=~s/,//g; }      if ($type eq 'float') { $response=~s/,//g; }
   
     if (length($response) > 500) { return "TOO_LONG: Answer too long"; }      if (length($response) > 500) { return ('TOO_LONG',undef); }
   
     if ($type eq '' ) {      if ($type eq '' ) {
  &LONCAPA_INTERNAL_DEBUG("Didn't find a type :$type: defaulting");   &LONCAPA_INTERNAL_DEBUG("Didn't find a type :$type: defaulting");
Line 190  sub caparesponse_check { Line 191  sub caparesponse_check {
  elsif ($type eq 'subj')  { $type = 7; }   elsif ($type eq 'subj')  { $type = 7; }
  elsif ($type eq 'float') { $type = 2; }   elsif ($type eq 'float') { $type = 2; }
  elsif ($type eq 'int')   { $type = 1; }   elsif ($type eq 'int')   { $type = 1; }
  else { return "ERROR: Unknown type of answer: $type" }   else { return ('ERROR', "Unknown type of answer: $type") }
     }      }
   
     my $points;      my $points;
Line 216  sub caparesponse_check { Line 217  sub caparesponse_check {
   
     my $reterror="";      my $reterror="";
     my $result;      my $result;
       if ((($type eq '9') || ($type eq '8')) && ($response=~/\=/)) { return ('BAD_FORMULA','Please submit just an expression, not an equation.'); }
     if ($type eq '9') {      if ($type eq '9') {
       $result = &maxima_check(&maxima_cas_formula_fix($response),&maxima_cas_formula_fix($answer),\$reterror);        $result = &maxima_check(&maxima_cas_formula_fix($response),&maxima_cas_formula_fix($answer),\$reterror);
     } else {      } else {
Line 250  sub caparesponse_check { Line 252  sub caparesponse_check {
     elsif ($result =='15') { $result='UNIT_IRRECONCIBLE'; }      elsif ($result =='15') { $result='UNIT_IRRECONCIBLE'; }
     else  {$result = "ERROR: Unknown Result:$result:$@:";}      else  {$result = "ERROR: Unknown Result:$result:$@:";}
   
     &LONCAPA_INTERNAL_DEBUG("RetError $reterror: Answer $answer: Response $response:  type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$unit|",$reterror);      &LONCAPA_INTERNAL_DEBUG("RetError $reterror: Answer $answer: Response $response:  type-$type|$tol|$tol_type|$sig:$sig_lbound:$sig_ubound|$unit|");
       &LONCAPA_INTERNAL_DEBUG(" $answer $response $result ");
     return ($result,$reterror)      return ($result,$reterror)
 }  }
   
 sub maxima_cas_formula_fix {  
    my ($expression)=@_;  
    return &implicit_multiplication($expression);  
 }  
   
 sub capa_formula_fix {  
    my ($expression)=@_;  
    return &implicit_multiplication($expression);  
 }  
   
 sub implicit_multiplication {  
     my ($expression)=@_;  
 # Escape scientific notation, so 3e8 does not become 3*e*8  
 # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8  
     $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;  
 # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8  
     $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;  
 # Fill in multiplication signs  
 # a b -> a*b;3 b -> 3*b;3 4 -> 3*4  
     $expression=~s/(\w)\s+(\w)/$1\*$2/gs;  
 # )( -> )*(; ) ( -> )*(  
     $expression=~s/\)\s*\(/\)\*\(/gs;  
 # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A  
     $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;  
 # a ( -> a*(  
     $expression=~s/(\w)\s+\(/$1\*\(/gs;  
 # a3 -> a*3;  
     $expression=~s/([a-zA-Z])(\d)/$1\*$2/gs;  
 # )a -> )*a; )3 -> )*3; ) 3 -> )*3  
     $expression=~s/\)\s*(\w)/\)\*$1/gs;  
 # 3&8 -> 3e8; 3&-4 -> 3e-4  
     $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;  
     return $expression;  
 }  
   
 sub caparesponse_check_list {  sub caparesponse_check_list {
     my $response=$LONCAPA::CAPAresponse_args{'response'};      my $responses=$LONCAPA::CAPAresponse_args{'response'};
     my $result="Got response :".join(':',@LONCAPA::CAPAresponse_answer).":\n";  #    &LONCAPA_INTERNAL_DEBUG(" answer is ".
   #    &LONCAPA_INTERNAL_Dumper($LONCAPA::CAPAresponse_answer).":\n");
   #    &LONCAPA_INTERNAL_DEBUG(" respons is ".
   #    &LONCAPA_INTERNAL_Dumper($responses).":\n");
     &LONCAPA_INTERNAL_DEBUG("args ".join(':',%LONCAPA::CAPAresponse_args));      &LONCAPA_INTERNAL_DEBUG("args ".join(':',%LONCAPA::CAPAresponse_args));
     my @responselist;  
     my $type = $LONCAPA::CAPAresponse_args{'type'};      my $type = $LONCAPA::CAPAresponse_args{'type'};
     &LONCAPA_INTERNAL_DEBUG("Got type :$type:\n");      &LONCAPA_INTERNAL_DEBUG("Got type :$type:\n");
     my $num_answers = scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}});      
     if ($type ne ''       my $num_input_lines =
  && $num_answers > 1) {   scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}});
  (@responselist)=split(/,/,$response);      
  if (@responselist < $num_answers) {      if ($type ne '' ) {
    if (scalar(@$responses) < $num_input_lines) {
     return 'MISSING_ANSWER';      return 'MISSING_ANSWER';
  }   }
  if (@responselist > $num_answers) {   if (scalar(@$responses) > $num_input_lines) {
       return 'EXTRA_ANSWER';
    }
   
       }
   
       foreach my $which (0..($num_input_lines-1)) {
    my $answer_size = 
       scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}[$which]});
    if ($type ne '' 
       && $answer_size > 1) {
       $responses->[$which]=[split(/,/,$responses->[$which])];
    } else {
       $responses->[$which]=[$responses->[$which]];
    }
       }
   #    &LONCAPA_INTERNAL_DEBUG(" parsed response is ".
   #    &LONCAPA_INTERNAL_Dumper($responses).":\n");
       foreach my $which (0..($num_input_lines-1)) {
    my $answer_size = 
       scalar(@{$LONCAPA::CAPAresponse_answer->{'answers'}[$which]});
    my $response_size = 
       scalar(@{$responses->[$which]});
    if ($answer_size > $response_size) {
       return 'MISSING_ANSWER';
    }
    if ($answer_size < $response_size) {
     return 'EXTRA_ANSWER';      return 'EXTRA_ANSWER';
  }   }
     } else {  
  (@responselist)=($response);  
     }      }
     &LONCAPA_INTERNAL_DEBUG("Initial final response :$responselist['-1']:");  
       &LONCAPA_INTERNAL_DEBUG("Initial final response :$responses->[0][-1]:");
     my $unit;      my $unit;
     if ($type eq '' || $type eq 'float') {      if ($type eq '' || $type eq 'float') {
  #for numerical problems split off the unit   #for numerical problems split off the unit
  if ( $responselist['-1']=~ /(.*[^\s])\s+([^\s]+)/ ) {  # if ( $responses->[0][-1]=~ /(.*[^\s])\s+([^\s]+)/ ) {
     $responselist['-1']=$1;          if ( $responses->[0][-1]=~ /^([\d\.\,\s\$]*(?:(?:[xX\*]10[\^\*]*|[eE]*)[\+\-]*\d*)*(?:^|\S)\d+)([\$\s\w\^\*\/\(\)\+\-]*[^\d\.][\$\s\w\^\*\/\(\)\+\-]*)$/ ) {
     $unit=$2;      $responses->[0][-1]=$1;
       $unit=&capa_formula_fix($2);
               &LONCAPA_INTERNAL_DEBUG("Found unit :$unit:");
  }   }
     }      }
     &LONCAPA_INTERNAL_DEBUG("Final final response :$responselist['-1']:$unit:");      &LONCAPA_INTERNAL_DEBUG("Final final response :$responses->[0][-1]:$unit:");
     $unit=~s/\s//;      $unit=~s/\s//;
       if ($unit ne '') {
    foreach my $response (@$responses) {
       foreach my $element (@$response) {
                   $element =~ s/\s//g;    
    $element .= " $unit";
       }
    }
       }
       
       foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
    if (!defined($thisanswer)) {
       return ('ERROR','answer was undefined');
    }
       }
   
   
   #    &LONCAPA_INTERNAL_DEBUG(&LONCAPA_INTERNAL_Dumper($responses));
       my %memoized;
       if ($LONCAPA::CAPAresponse_answer->{'type'}  eq 'ordered') {
    for (my $i=0; $i<scalar(@$responses);$i++) {
       my $answer   = $LONCAPA::CAPAresponse_answer->{'answers'}[$i];
       my $response = $responses->[$i];
       my $key = "$answer\0$response";
       my (@awards,@msgs);
       for (my $j=0; $j<scalar(@$response); $j++) { 
    my ($award,$msg) = &caparesponse_check($answer->[$j],
          $response->[$j]);
    push(@awards,$award);
    push(@msgs,  $msg);
       }
       my ($award,$msg) = 
    &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
       $memoized{$key} = [$award,$msg];
    }
       } else {
    #FIXME broken with unorder responses where one is a <value>
           #      and the other is a <vector> (need to delay parse til
           #      inside the loop?)
    foreach my $response (@$responses) {
       my $response_size = scalar(@{$response});
       foreach my $answer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
    my $key = "$answer\0$response";
    my $answer_size =  scalar(@{$answer});
    my ($award,$msg);
    if ($answer_size > $response_size) {
       $award = 'MISSING_ANSWER';
    } elsif ($answer_size < $response_size) {
       $award = 'EXTRA_ANSWER';
    } else {
       my (@awards,@msgs);
       for (my $j=0; $j<scalar(@$response); $j++) {
    my ($award,$msg) = &caparesponse_check($answer->[$j],
          $response->[$j]);
    push(@awards,$award);
    push(@msgs,  $msg);
       }
       ($award,$msg) = 
    &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
    }
    $memoized{$key} = [$award,$msg];
       }
    }
       }
   
     #&reset_caparesponse_memoization();  
     my ($final_award,$final_msg);      my ($final_award,$final_msg);
     &init_permutation(scalar(@responselist),      &init_permutation(scalar(@$responses),
       $LONCAPA::CAPAresponse_answer->{'type'});        $LONCAPA::CAPAresponse_answer->{'type'});
   
       # possible FIXMEs
       # - significant time is spent calling non-safe space routine
       #   from safe space
       # - early outs could be possible with classifying awards is to stratas
       #   and stopping as so as hitting the top strata 
       # - some early outs also might be possible with check ing the 
       #   memoized hash of results (is correct even possible? etc.)
   
       my (@final_awards,@final_msg);
     while( &get_permutations_left() ) {      while( &get_permutations_left() ) {
  my @responses_ordered = @responselist[&get_next_permutation()];   my $order = &get_next_permutation();
  my (@awards, @msgs, $i);   my (@awards, @msgs, $i);
  foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {   foreach my $thisanswer (@{ $LONCAPA::CAPAresponse_answer->{'answers'} }) {
     my ($msg,$aresult);      my $key = "$thisanswer\0".$responses->[$order->[$i]];
     if (defined($thisanswer)) {      push(@awards,$memoized{$key}[0]);
  my $response = $responses_ordered[$i];      push(@msgs,$memoized{$key}[1]);
  if ($unit eq '') {  
     $response .= " $unit";  
  }  
  ($aresult,$msg)=&caparesponse_check($thisanswer,$response);  
     } else {  
  $aresult='ERROR';  
  $msg='answer was undefined';  
     }  
     #&LONCAPA_INTERNAL_DEBUG("after if $aresult -- $msg");  
     my ($temp)=split(/:/, $aresult);  
     push(@awards,$temp);  
     push(@msgs,$msg);  
     $i++;      $i++;
   
  }   }
    &LONCAPA_INTERNAL_DEBUG(" all awards ".join(':',@awards));
   
  my ($possible_award,$possible_msg) =    my ($possible_award,$possible_msg) = 
     &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);      &LONCAPA_INTERNAL_FINALIZEAWARDS(\@awards,\@msgs);
  if ($final_award) {   &LONCAPA_INTERNAL_DEBUG(" pos awards ".$possible_award);
     ($final_award,$final_msg) =    push(@final_awards,$possible_award);
  &LONCAPA_INTERNAL_FINALIZEAWARDS([$final_award,$possible_award],   push(@final_msg,$possible_msg);
  [$final_msg,$possible_msg],  
  undef,1);  
  } else {  
     ($final_award,$final_msg) = ($possible_award,$possible_msg);  
  }  
     }      }
     #&reset_caparesponse_memoization();  
       &LONCAPA_INTERNAL_DEBUG(" all final_awards ".join(':',@final_awards));
       my ($final_award,$final_msg) = 
    &LONCAPA_INTERNAL_FINALIZEAWARDS(\@final_awards,\@final_msg,undef,1);
     return ($final_award,$final_msg);      return ($final_award,$final_msg);
 }  }
   
   sub cas {
       my ($system,$input)=@_;
       my $output;
       if ($system eq 'maxima') {
          $output=&maxima_eval($input);
       }
       return $output;
   }
   
 sub tex {  sub tex {
     if ( $external::target eq "tex" ) {      if ( $external::target eq "tex" ) {
  return $_[0];   return $_[0];
Removed from v.1.116  
changed lines
  Added in v.1.131

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