%%%%%%%%%%% ALGORITHMS STYLE %%%%%%%%%%% % This style defines an environment for algorithms with the following % features: % % 1) Defines an Theorem like environment (not exactly one) for % algorithms called algorithm''. % \begin{algorithm}{NAME} ... \end{algorithm} % NAME is the NAME of the algorithm. % Algorithms are numbered using a counter called algorithm''. % % 2) Inside this environment, the following commands are defined. % % \= Put the small left arrow commonly used for assignment. % % \invariant{INVARIANT} Use to describe invariants, put its parameter % between {}'' in math mode. % % \begin{Block} ... \end{Block} Environment use to start a indented % block of instructions \end{Block} put % an end'' to close the block. % % \nextBlock{SEPARATOR} Inside a Block, it allows to put a separator % of parts of the indented block. Usefull for % constructions like IF..THEN..ELSE..END'' % i.e. If cond then % \begin{Block} % then part % \nextBlock{else} % else part % \end{Block} % % 3) \Blockindent and \algorithmindent are length that specify the % indentention of Blocks and of the algorithm resp. % % 4) Instructions are separated by \\'', \par'' or by leaving a % blank line. Before an \end{Block}'' a \\'' can't be used. % % % Created by Jose Alberto Fernandez R. % e-mail: alberto@cs.umd.edu % % \newcounter{algorithm} \newtheorem{Alg@orithm}[algorithm]{Algorithm} % Invariants \newcommand{\inv@ariant}[1]{\mbox{$\{#1\}$}} % Steps environment \newenvironment{ste@ps}[1]{ \begin{list}{} {\setlength\labelsep{0in} \addtolength\partopsep\topsep \addtolength\partopsep\parsep \setlength\parsep{0in} \setlength\topsep{0in} \setlength\itemsep{0in} \setlength\labelwidth{0in} \setlength\rightmargin{0in} \setlength\leftmargin{#1}} }{ \end{list} } % Block environment % Indentation of the Block \newlength{\Blockindent} % NextBlock command \newcommand{\next@Block}[1]{ \end{ste@ps} #1 \begin{ste@ps}{\Blockindent} \item } \newenvironment{Blo@ck}{ \let\nextBlock\next@Block \begin{ste@ps}{\Blockindent} \item }{ \end{ste@ps} end } % Algorithm environment % Assign command \newcommand{\ass@ign}{\mbox{$\leftarrow$}} % Indentation of the algorithm \newlength{\algorithmindent} % Algorithm definition \newenvironment{algorithm}[1]{ \let\=\ass@ign \let\invariant\inv@ariant \let\Block\Blo@ck \let\endBlock\endBlo@ck \begin{Alg@orithm} #1 \rm\par \begin{ste@ps}{\algorithmindent} \item }{ \end{ste@ps} \bf end \end{Alg@orithm} } % Setting default indentation \setlength{\algorithmindent}{1em} \setlength{\Blockindent}{2em} % End of algorithm.sty