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%%--------------------------------------------------------------------------------------------------------------
%%                                              ALGORITHME 1.1
%%--------------------------------------------------------------------------------------------------------------
%% Quoi de neuf depuis Algorithm 1.0 / What's new since Algorithm 1.0
%%
%% Meilleure boîte de cadrage
%% Meilleure gestion des largeurs, permettant l'utilisation du mode multicolonnes, et permettant la césure
%% automatique des longues lignes de pseudo-instructions.
%% Widths are better handled, allowing the use of multicolumn mode, and also allowing auto line splitting into
%% long lines of pseudo-code.
%%--------------------------------------------------------------------------------------------------------------
%%
%% Copyleft Pierre Chatelier
%%       e-mail: pierre.chatelier@club-internet.fr
%%   page perso: http://perso.club-internet.fr/ktd
%%
%%Un package pour ecrire du code algorithmique
%%Il propose, dans l'environnement "algorithme", d'utiliser
%%  -Des remarques, pour commenter le code          ( \Rem{Remarque}                                         )
%%  -Des blocs, pour indenter le code               ( \Block{code}                                           )
%%  -Des boucles "Tant Que...faire...Fait"          ( \While{condition}{code}                                )
%%  -Des boucles "Repeter...jusqu'a"                ( \Repeat{code}{condition} ou \RepeatUntil{}{}           )
%%  -Des boucles "Pour...de...a...faire...Fin Pour" ( \ForFromTo{variable}{valeur début}{valeur fin}{code}   )
%%  -Des boucles "Pour...faire...Fin Pour"          ( \For{controle de boucle}{code}                         )
%%  -Des Si...Alors...Fin Si                        ( \If{condition}{code} ou \IfThen{condition}{code}       )
%%  -Des Si...Alors...Sinon...Fin Si                ( \IfThenElse{condition}{code de alors}{code de sinon}   )
%%  -Des Selon que ... Fin Selon que                ( \Switch{code}                                          )
%%  -Des fonctions                                  ( \Function{parametres}{type de retour}{code}            )
%%  -Des procédures                                 ( \Procedure{parametres}{code}                           )
%%  -Une instruction de declaration de type         ( \Type{nom ou liste de variable}{nom de type}           )
%%  -Quelques mots-clefs d'usage courant : \True, \False, \And, \Or et \Not
%% Les versions étoilées des commandes (\WhileDo*{}, \IfThen*{}, ... ; toutes sauf \Rem, \Block \Switch,
%% \Function et \Procedure) font tout sur la meme ligne
%%
%% Une table des algorithmes est disponible via \listofalgorithms.
%% Pour introduire un algorithme dans cette table, il faut taper la commande "\caption{texte...}" dans un
%% environnemment "algorithme"
%%
%% On peut passer une option au package : [french] ou [english] pour la langue des mots-clef
%%
%%---------------------------------------------------------------------------------------------------------------
%%This is a package to write some algorithms.
%%It provides, within an "algorithm" environment, to use
%%  -Comments                         ( \Rem{text}                                               )
%%  -Blocks, to indent code           ( \Block{text}                                             )
%%  -While ... do ... done            ( \While{condition}{code}                                  )
%%  -Repeat ... until                 ( \Repeat{code}{condition} or \RepeatUntil{}{}             )
%%  -Repeat ... until                 ( \RepeatUntil{code}{condition}                            )
%%  -For...from...to...do...done      ( \ForFromTo{variable}{initial value}{final value}{code}   )
%%  -For...do...done                  ( \For{loop control}{code}                                 )
%%  -If...then...end if               ( \If{condition}{code} or \IfThen{condition}{code}         )
%%  -If...then...else...end if        ( \IfThenElse{condition}{then code}{else code}             )
%%  -Switch                           ( \Switch{code}                                            )
%%  -Function                         ( \Function{parameters}{return type}{code}                 )
%%  -Procedure                        ( \Procedure{parametres}{code}                             )
%%  -A type declaration instruction   ( \Type{name or list of variables}{type name}              )
%%  -Some useful keywords: \True, \False, \And, \Or and \Not.
%% Most of these commands have a star-form (\WhileDo*{}, \IfThen*{}, ... ; all but \Rem, \Block \Switch
%% \Function and \Procedure). These star-forms are single-lined.
%%
%% A list of algorithms is provided through \listofalgorithms.
%% To add an entry in this table, the matching algorithm must have a caption, thanks to "\caption{text}".
%%
%% You can specifiy an option to the package : [french] ou [english] for the language of the keywords.
%%
%%---------------------------------------------------------------------------------------------------------------


%%-----------------------------------------------------------------%%
%%---------------------- Identification ---------------------------%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{algorithme} %Nom de la classe / Class name
%%-----------------------------------------------------------------%%
%%
%%
%%-----------------------------------------------------------------%%
%%------------------------ Inclusions -----------------------------%%
\RequirePackage{float, ifthen, calc}
%%
%%
%%-----------------------------------------------------------------%%
%%------------------------ Langage/Language -----------------------%%

%% Changer le langage dans le contexte de babel /Change langage according to babel
\@ifpackageloaded{babel}
{
  %\iflanguage{french}{\def\alg@language{french}}{}
  \iflanguage{english}{\def\alg@language{english}}{}
  \iflanguage{american}{\def\alg@language{english}}{}
}
{
 % \def\alg@language{french} %Langage par defaut / Default language
}

%% Tenir compte de l'option specifiee explicitement / Handle explicit langage option
%\DeclareOption{french}{\def\alg@language{french}}
\DeclareOption{english}{\def\alg@language{english}}
\DeclareOption{american}{\def\alg@language{english}}
\ProcessOptions\relax


%% Declaration des commandes / Commands declaration
\ifthenelse{\equal{\alg@language}{french}}
{
  \def\alg@floatname{Algorithme}
  \def\alg@listname{Liste des Algorithmes}

  \newcommand{\@TRUE}{\textbf{vrai}}%
  \newcommand{\@FALSE}{\textbf{faux}}%
  \newcommand{\@AND}{\textbf{ET }}%
  \newcommand{\@OR}{\textbf{OU }}%
  \newcommand{\@NOT}{\textbf{$\neg$}}%

  \newcommand{\@WHILE}{\textbf{Tant que }}%
  \newcommand{\@DO}{\textbf{faire }}%
  \newcommand{\@ENDWHILE}{\textbf{Fait}}%

  \newcommand{\@REPEAT}{\textbf{R\'ep\'eter }}%
  \newcommand{\@UNTIL}{\textbf{jusqu'\`a ce que }}%

  \newcommand{\@FOR}{\textbf{Pour }}%
  \newcommand{\@FROM}{\textbf{de }}%
  \newcommand{\@TO}{\textbf{\`a }}%
  \newcommand{\@ENDFOR}{\textbf{Fin Pour}}%
 
  \newcommand{\@IF}{\textbf{Si }}%
  \newcommand{\@THEN}{\textbf{Alors }}%
  \newcommand{\@ELSE}{\textbf{Sinon }}%
  \newcommand{\@ENDIF}{\textbf{Fin Si}}%

  \newcommand{\@SWITCH}{\textbf{Selon que }}%
  \newcommand{\@ENDSWITCH}{\textbf{Fin Selon que}}%
 
  \newcommand{\@FUNCTION}{\textbf{Fonction }}%
  \newcommand{\@RETURN}{\textbf{Retourner }}%
  \newcommand{\@ENDFUNCTION}{\textbf{Fin}}%
 
  \newcommand{\@PROCEDURE}{\textbf{Proc\'edure }}%
  \newcommand{\@ENDPROCEDURE}{\textbf{Fin}}%
}{}
\ifthenelse{\equal{\alg@language}{english}}
{
  \def\alg@floatname{Algorithm}
  \def\alg@listname{List of Algorithms}

  \newcommand{\@TRUE}{\textbf{true}}%
  \newcommand{\@FALSE}{\textbf{false}}%
  \newcommand{\@AND}{\textbf{AND }}%
  \newcommand{\@OR}{\textbf{OR }}%
  \newcommand{\@NOT}{\textbf{$\neg$}}%

  \newcommand{\@WHILE}{\textbf{While }}%
  \newcommand{\@DO}{\textbf{do }}%
  \newcommand{\@ENDWHILE}{\textbf{done}}%

  \newcommand{\@REPEAT}{\textbf{Repeat }}%
  \newcommand{\@UNTIL}{\textbf{until }}%

  \newcommand{\@FOR}{\textbf{For }}%
  \newcommand{\@FROM}{\textbf{from }}%
  \newcommand{\@TO}{\textbf{to }}%
  \newcommand{\@ENDFOR}{\textbf{end For}}%
 
  \newcommand{\@IF}{\textbf{If }}%
  \newcommand{\@THEN}{\textbf{then }}%
  \newcommand{\@ELSE}{\textbf{else }}%
  \newcommand{\@ENDIF}{\textbf{end If}}%

  \newcommand{\@SWITCH}{\textbf{Switch }}%
  \newcommand{\@ENDSWITCH}{\textbf{end Switch}}%
 
  \newcommand{\@FUNCTION}{\textbf{Function }}%
  \newcommand{\@RETURN}{\textbf{return }}%
  \newcommand{\@ENDFUNCTION}{\textbf{End}}%
 
  \newcommand{\@PROCEDURE}{\textbf{Procedure }}%
  \newcommand{\@ENDPROCEDURE}{\textbf{End}}%
}{}

%%
%%
%%-----------------------------------------------------------------%%
%%----------------------- Commandes/Commands ----------------------%%

%% Adequation au package "float" / Match "float" package
\newcommand\floatc@alg[2]{\begin{center}{\bfseries\rmfamily #1:} #2\end{center}}
\newcommand\fs@alg{
   \let\@fs@capt\floatc@alg
   \def\@fs@pre{}\def\@fs@post{}\def\@fs@mid{\vspace{3pt}}
   \let\@fs@iftopcapt\iftrue}
\newfloat{algorithmfloat}{h}{loa}
\floatname{algorithmfloat}{\alg@floatname}
%\newcommand{\listofalgorithms}{\listof{algorithmfloat}{\alg@listname}}
\newlength{\alglength}

%% Les commandes disponibles / Provided commands
\newenvironment{algorithme}[1][H]
{
 \setlength{\alglength}{.95\linewidth}
 \begin{algorithmfloat}[#1]
 
 %%Rem{texte} : ecrit une remarque
 %%Rem{text}  : puts a comment
 \newcommand{\@Rem}[1]{\begin{minipage}[t]{\alglength}
                        \emph{[##1]}
                        \vspace*{.5ex}
                       \end{minipage}
                      }%

 %%Bloc{code} : Encapsule quelques lignes / encapsulate some lines
 \newcommand{\@Block}[1]{\begin{minipage}[t]{\alglength}
                         ##1
                         \vspace*{.5ex}
                         \end{minipage}
                        }%

 %%WhileDo{condition}{code}
 \newcommand{\@WhileDo}[2]{\begin{minipage}[t]{\alglength}
                           \@WHILE (##1) \@DO \\
                           \hspace*{1em}
                           \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                           \begin{tabular}{|p{\alglength}} ##2\\ \end{tabular}%
                           \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                           \\ \@ENDWHILE%
                           \vspace*{.5ex}
                          \end{minipage}
                         }%
 %%WhileDo{condition}{code} sur une seule ligne / on a single line
 \newcommand{\@ShortWhileDo}[2]{\begin{minipage}[t]{\alglength}
                                \@WHILE (##1) \@DO ##2 \@ENDWHILE
                                \vspace*{.5ex}
                                \end{minipage}
                               }%

 %%RepeatUntil{code}{condition}
 \newcommand{\@RepeatUntil}[2]{\begin{minipage}[t]{\alglength}
                               \@REPEAT \\
                               \hspace*{1em}
                               \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                               \begin{tabular}{|p{\alglength}} ##1\\ \end{tabular}%
                               \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                               \\ \@UNTIL (##2)%
                               \vspace*{.5ex}
                              \end{minipage}
                             }%
 %%RepeatUntil{code}{condition} sur une seule ligne / on a single line
 \newcommand{\@ShortRepeatUntil}[2]{\begin{minipage}[t]{\alglength}
                                    \@REPEAT ##1 \@UNTIL (##2)%
                                    \vspace*{.5ex}
                                    \end{minipage}
                                   }%                             

 %%ForFromToDo{variable}{valeur initiale}{valeur finale}{code}
 %%ForFromToDo{variable}{initial value}{final value}{code}
 \newcommand{\@ForFromToDo}[4]{\begin{minipage}[t]{\alglength}
                               \@FOR ##1 \@FROM ##2 \@TO ##3 \@DO \\
                               \hspace*{.3em}
                               \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                               \begin{tabular}{|p{\alglength}} ##4\\ \end{tabular}%
                               \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                               \\ \@ENDFOR%
                               \vspace*{.5ex}
                              \end{minipage}
                             }%
 %%ForFromToDo{variable}{valeur initiale}{valeur finale}{code} sur une seule ligne
 %%ForFromToDo{variable}{initial value}{final value}{code} on a single line
 \newcommand{\@ShortForFromToDo}[4]{\begin{minipage}[t]{\alglength}
                                    \@FOR ##1 \@FROM ##2 \@TO ##3 \@DO ##4 \@ENDFOR%
                                    \vspace*{.5ex}
                                    \end{minipage}
                                   }%

 %%For{controle de boucle style C}{code}
 %%For{C-like loop control}{code}
 \newcommand{\@ForDo}[2]{\begin{minipage}[t]{\alglength}
                         \@FOR ##1 \@DO \vspace*{.5ex}\\
                         \hspace*{.3em}
                         \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                         \begin{tabular}{|p{\alglength}} ##2\\ \end{tabular}%
                         \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                         \\ \@ENDFOR%
                         \vspace*{.5ex}
                         \end{minipage}
                       }%
 %%For{controle de boucle style C}{code} sur une seule ligne
 %%For{C-like loop control}{code} on a single line
 \newcommand{\@ShortForDo}[2]{\begin{minipage}[t]{\alglength}
                              \@FOR ##1 \@DO ##2 \@ENDFOR%
                              \vspace*{.5ex}
                              \end{minipage}
                             }%

 %%IfThen{condition}{code}
 \newcommand{\@IfThen}[2]{\begin{minipage}[t]{\alglength}
                          \@IF (##1) \@THEN \\
                          \hspace*{.5em}
                          \addtolength{\alglength}{-1.5em-\tabcolsep-\arrayrulewidth}
                          \begin{tabular}{|p{\alglength}} ##2\\ \end{tabular}%
                          \addtolength{\alglength}{1.5em+\tabcolsep+\arrayrulewidth}
                          \\ \@ENDIF%
                          \vspace*{.5ex}
                         \end{minipage}
                        }%
 %%IfThen{condition}{code} sur une seule ligne / on a single line
 \newcommand{\@ShortIfThen}[2]{\begin{minipage}[t]{\alglength}
                               \@IF (##1) \@THEN ##2 \@ENDIF%
                               \vspace*{.5ex}
                               \end{minipage}
                              }%
                              
 %%IfThenElse{condition}{code du then}{code du else} NE PAS CONFONDRE avec le \ifthenelse de LaTeX
 %%IfThenElse{condition}{then-code}{else-code} DO NOT CONFUSE with \ifthenelse from LaTeX
 \newcommand{\@IfThenElse}[3]{\begin{minipage}[t]{\alglength}
                              \@IF (##1) \@THEN \\
                              \hspace*{.5em}
                              \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                              \begin{tabular}{|p{\alglength}} ##2\\ \end{tabular}%
                              \\ \@ELSE\\
                              \hspace*{.5em}
                              \begin{tabular}{|p{\alglength}} ##3\\ \end{tabular}%
                              \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                              \\ \@ENDIF%
                              \vspace*{.5ex}
                              \end{minipage}
                            }%
 %%IfThenElse{condition}{code du then}{code du else} sur une seule ligne
 %%IfThenElse{condition}{then-code}{else-code} on a single line
 \newcommand{\@ShortIfThenElse}[3]{\begin{minipage}[t]{\alglength}
                                   \@IF (##1) \@THEN ##2 \@ELSE ##3 \@ENDIF%
                                   \vspace*{.5ex}
                                   \end{minipage}
                                  }%

 %%Switch{code} (C'est le selon que)
 \newcommand{\@Switch}[1]{\begin{minipage}[t]{\alglength}
                          \@SWITCH \\
                          \hspace*{1em}
                          \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                          \begin{tabular}{|p{\alglength}} ##1\\ \end{tabular}%
                          \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                          \\ \@ENDSWITCH%
                          \vspace*{.5ex}
                          \end{minipage}
                        }%

 %%Function{parametres}{type de retour}{code}
 %%Function{parameters}{return type}{code}
 \newcommand{\@Function}[4]{\begin{minipage}[t]{\alglength}
                            \@FUNCTION  ##1(##2) : \textbf{##3}\\
                            \hspace*{1em}
                            \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                            \begin{tabular}{|p{\alglength}} ##4\\ \end{tabular}%
                            \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                            \\ \@ENDFUNCTION%
                            \vspace*{.5ex}
                            \end{minipage}
                           }%

 %%Procedure{parametres}{code}
 %%Procedure{parameters}{code}
 \newcommand{\@Procedure}[3]{\begin{minipage}[t]{\alglength}
                             \@PROCEDURE ##1(##2)\\
                             \hspace*{1em}
                             \addtolength{\alglength}{-2em-\tabcolsep-\arrayrulewidth}
                             \begin{tabular}{|p{\alglength}} ##3\\ \end{tabular}%
                             \addtolength{\alglength}{2em+\tabcolsep+\arrayrulewidth}
                             \\ \@ENDPROCEDURE%
                             \vspace*{.5ex}
                             \end{minipage}
                            }%

 %%Type{nom ou liste de variable}{nom de type}
 %%Type{name or list of variables}{type name}
 \newcommand{\@Type}[2]{##1 : \textbf{##2}}                            
                           
 %%Definition des macro-commandes pratiques pour l'utilisateur.
 %%La forme etoilee de certaines commandes est un alias de leur version courte (sur une seule ligne)
 %%Definition of macro-commands useful for the user.
 %%The star-from of some commands is an alias towards ther short form (on a single line)
 \def\True{       \@TRUE}%
 \def\False{      \@FALSE}%
 \def\And{        \@AND}%
 \def\Or{         \@OR}%
 \def\Not{        \@NOT}%
 \def\Rem{        \@Rem}
 \def\Block{      \@Block}
 \def\While{      \@ifstar{\@ShortWhileDo}     {\@WhileDo}}
 \def\WhileDo{    \@ifstar{\@ShortWhileDo}     {\@WhileDo}}
 \def\Repeat{     \@ifstar{\@ShortRepeatUntil} {\@RepeatUntil}}
 \def\RepeatUntil{\@ifstar{\@ShortRepeatUntil} {\@RepeatUntil}}
 \def\ForFromTo{  \@ifstar{\@ShortForFromToDo} {\@ForFromToDo}} 
 \def\ForFromToDo{\@ifstar{\@ShortForFromToDo} {\@ForFromToDo}} 
 \def\ForDo{      \@ifstar{\@ShortForDo}       {\@ForDo}} 
 \def\For{        \@ifstar{\@ShortForDo}       {\@ForDo}} 
 \def\If{         \@ifstar{\@ShortIfThen}      {\@IfThen}} 
 \def\IfThen{     \@ifstar{\@ShortIfThen}      {\@IfThen}} 
 \def\IfThenElse{ \@ifstar{\@ShortIfThenElse}  {\@IfThenElse}} 
 \def\Switch{     \@ifstar{\@Switch}           {\@Switch}} 
 \def\Function{   \@ifstar{\@Function}         {\@Function}} 
 \def\Return{     \@RETURN}
 \def\Procedure{  \@ifstar{\@Procedure}        {\@Procedure}} 
 \def\Type{       \@Type}
 
 \begin{minipage}[t]{\alglength}
 \begin{center}\begin{tabular}{|c|}\hline\\
 \hspace*{.5em}
 \begin{minipage}[t]{\alglength}
}
%% Fin de l'environnement "algorithme" / end of "algorithme" environnment
{
 \end{minipage}\hspace*{.5em}
 \\\\\hline\end{tabular}\end{center}
 \end{minipage}
 \end{algorithmfloat}
}

%% ----------------------------- FIN / END ---------------------------------------
</pre></body></html>