# [Tex/LaTex] a good package for displaying algorithms

algorithmspackagespseudocode

I found this page with some examples:
http://en.wikibooks.org/wiki/LaTeX/Algorithms_and_Pseudocode

I'm wondering which one to use. Any suggestions? I'm using other packages too so whichever is less likely to interfere with them is better for me.

#### Best Answer

Personally, I favour algpseudocode from the algorithmicx (note the trailing x!) package. With a bit of setup, this can be harnessed to create beautiful pseudocode.

This was produced by the following code:

\begin{algorithm}
\caption{Counting mismatches between two packed \DNA{} strings
\label{alg:packed-dna-hamming}}
\begin{algorithmic}[1]
\Require{$x$ and $y$ are packed \DNA{} strings of equal length $n$}
\Statex
\Function{Distance}{$x, y$}
\Let{$z$}{$x \oplus y$} \Comment{$\oplus$: bitwise exclusive-or}
\Let{$\delta$}{$0$}
\For{$i \gets 1 \textrm{ to } n$}
\If{$z_i \neq 0$}
\Let{$\delta$}{$\delta + 1$}
\EndIf
\EndFor
\State \Return{$\delta$}
\EndFunction
\end{algorithmic}
\end{algorithm}


And used the following setup (this is just an example to replicate the above; you can of course use your own setup):

\usepackage{fontspec}
\setmainfont{Hoefler Text}
\newcommand*\DNA{\textsc{dna}}

\newcommand*\Let[2]{\State #1 $\gets$ #2}
\algrenewcommand\alglinenumber[1]{
{\sf\footnotesize\addfontfeatures{Colour=888888,Numbers=Monospaced}#1}}
\algrenewcommand\algorithmicrequire{\textbf{Precondition:}}
\algrenewcommand\algorithmicensure{\textbf{Postcondition:}}


To get the end-less pseudocodes, I included the package as follows:

\usepackage[noend]{algpseudocode}


The above pseudo code is nested inside an algorithm float environment. This environment isn’t part of algorithmicx. Instead, you need to load the package algorithm to get it. To produce a list of all algorithms, you can use

\listofalgorithms


For further information, see the section “The algorithm Environment” in the documentation of the algorithms package. But I want to stress again that (except for the float environment) the algorithmicx package is superior to algorithms.