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-<head>
-<title>UK TeX FAQ -- question label algorithms</title>
-</head><body>
-<h3>Typesetting pseudocode in LaTeX</h3>
-<p/>There is no consensus on the &lsquo;right&rsquo; way to typeset pseudocode.
-Consequently, there are a variety of LaTeX packages to choose from
-for producing &aelig;sthetically pleasing pseudocode listings.
-<p/>Pseudocode differs from actual program listings in that it lacks
-strict syntax and semantics. Also, because pseudocode is supposed to
-be a clear expression of an algorithm it may need to incorporate
-mathematical notation, figures, tables, and other LaTeX features
-that do not appear in conventional programming languages.
- <a href="FAQ-codelist.html">Typesetting program listings</a> is described
- elsewhere.
-
-<p/>You can certainly create your own environment for typesetting
-pseudocode using, for example, the <code>tabbing</code> or
-<code>list</code> environments &mdash; it&rsquo;s not difficult, but it may
-prove boring. So it&rsquo;s worth trying the following packages, all
-designed specifically for typesetting pseudocode.
-<p/>The <i>algorithms</i> bundle (which contains packages
-<i>algorithm</i> and <i>algorithmic</i>, both of which are
-needed for ordinary use) has a simple interface and produces fairly
-nice output. It provides primitives for statements, which can contain
-arbitrary LaTeX commands, comments, and a set of iterative and
-conditional constructs. These primitives can easily be redefined to
-produce different text in the output. However, there is no support
-for adding new primitives. Typesetting the pseudocode itself is
-performed in <i>algorithmic</i>; the <i>algorithms</i> package
-uses the facilities of the <i>float</i> package to number
-algorithms sequentially, enable algorithms to float like figures or
-tables, and support including a List of Algorithms in a document&rsquo;s
-front matter.
-<p/>Packages in the <i>algorithmicx</i> bundle are similar both in
-concept and output form to <i>algorithmic</i> but additionally
-provide support for adding new keywords and altering the formatting.
-It provides the <i>algpseudocode</i> package which is (almost) a
-drop-in replacement for <i>algorithmic</i>. Another package in the
-bundle, <i>algpascal</i>, uses Pascal-like keywords, indents
-differently from <i>algpseudocode</i>, and puts command arguments
-in maths mode instead of text mode. There is no floating environment
-but <i>algorithmicx</i>, like <i>algorithmic</i>, is compatible
-with the <i>algorithm</i> package.
-<p/>The <i>alg</i> package, like <i>algorithms</i>, offers a
-floating algorithm environment with all of the ensuing niceties.
-<i>alg</i>, however, can caption its floats in a variety of
-(natural) languages. In addition, <i>alg</i> unlike
-<i>algorithms</i>, makes it easy to add new constructs.
-<p/>The <i>newalg</i> package has a somewhat similar interface to
-<i>algorithms</i>, but its output is designed to mimic the rather
-pleasant typesetting used in the book &ldquo;<em>Introduction to Algorithms</em>&rdquo;
-by Corman, Leiserson, Rivest and Stein. Unfortunately,
-<i>newalg</i> does not support a floating environment or any
-customisation of the output.
-<p/>&ldquo;<em>Bona fide</em>&rdquo; use of the style of &ldquo;Introduction to
-Algorithms&rdquo; may be achieved with Cormen&rsquo;s own <i>clrscode</i>:
-this is the package as used in the second edition of the book.
-<p/>Similarly, the style of
-&ldquo;<em>Combinatorial Algorithms: Generation, Enumeration and Search</em>&rdquo;
-is supported by the <i>pseudocode</i> package, written by the
-authors of the book. It has the common &lsquo;Pascal-like&rsquo; style, and has
-some interesting constructs for what one thinks of as Pascal blocks.
-<p/>The <i>algorithm2e</i> is of very long standing, and is widely used
-and recommended. It loads the <i>float</i> package to provide the
-option of floating algorithm descriptions, but you can always use the
-&ldquo;<code>H</code>&rdquo; option of <i>float</i> to have the algorithm appear
-&ldquo;where you write it&rdquo;.
-<p/>The usage of the <i>program</i> package is a little different from
-that of the other packages. It typesets programs in maths mode
-instead of text mode; and linebreaks are significant.
-<i>program</i> lacks a floating environment but does number
-algorithms like <i>alg</i> and <i>algorithms</i>. Customisation
-and extension are not supported. Documentation of the
-<i>program</i> package (such as it is) appears in a file
-<i>program.msg</i> in the distribution.
-<p/>None of the above are perfect. The factors that should influence your
-choice of package include the output style you prefer, how much you
-need to extend or modify the set of keywords, and whether you require
-algorithms to float like figures and tables.
-
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-<dl>
-<dt><tt><i>algorithm2e.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithm2e.zip">macros/latex/contrib/algorithm2e</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithm2e.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/algorithm2e/">browse</a>)
-<dt><tt><i>algorithmicx bundle</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithmicx.zip">macros/latex/contrib/algorithmicx</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithmicx.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/algorithmicx/">browse</a>)
-<dt><tt><i>algorithms bundle</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithms.zip">macros/latex/contrib/algorithms</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/algorithms.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/algorithms/">browse</a>)
-<dt><tt><i>alg.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/alg.zip">macros/latex/contrib/alg</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/alg.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/alg/">browse</a>)
-<dt><tt><i>clrscode.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/clrscode.zip">macros/latex/contrib/clrscode</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/clrscode.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/clrscode/">browse</a>)
-<dt><tt><i>float.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/float.zip">macros/latex/contrib/float</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/float.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/float/">browse</a>)
-<dt><tt><i>newalg.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/newalg.zip">macros/latex/contrib/newalg</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/newalg.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/newalg/">browse</a>)
-<dt><tt><i>program.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/program.zip">macros/latex/contrib/program</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/program.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/program/">browse</a>)
-<dt><tt><i>pseudocode.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/pseudocode.zip">macros/latex/contrib/pseudocode</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/pseudocode.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/pseudocode/">browse</a>)
-</dl>
-<p/><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=algorithms">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=algorithms</a>
-</body>