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I found this page with some examples:

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.

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I would suggest you change the title to something less subjective, such as "What is a good package for displaying algorithms?" or more in line with the current one "What is a good package for displaying dem algorithms?" :) –  Amir Rachum Aug 9 '10 at 7:28
Related: Print programs with its proper syntax –  Werner Jun 4 '14 at 22:05

5 Answers 5

Personally, I favour algpseudocode from the algorithmicx (note the trailing x!) package. With a bit of setup, this can be harnessed to create beautiful pseudo codes. For an example of its usage, have a look at the “Algorithm” chapter of my bachelor thesis, e.g.:

algpseudocode example

This was produced by the following code:

  \caption{Counting mismatches between two packed \DNA strings
    \Require{$x$ and $y$ are packed \DNA strings of equal length $n$}
    \Function{Distance}{$x, y$}
      \Let{$z$}{$x \oplus y$} \Comment{$\oplus$: bitwise exclusive-or}
      \For{$i \gets 1 \textrm{ to } n$}
        \If{$z_i \neq 0$}
          \Let{$\delta$}{$\delta + 1$}
      \State \Return{$\delta$}

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

\setmainfont{Hoefler Text}

\newcommand*\Let[2]{\State #1 $\gets$ #2}

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


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


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.

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can you make a \listofalgorithms with it? i was checking out algorithmic but it doesn't seem to have a \function tag which is pretty disappointing –  bada Aug 9 '10 at 7:43
@bada: This is not the algorithmic package, it’s algorithmicx, note the trailing x. It does have a \Function macro. For a list of algorithms, see updated answer. –  Konrad Rudolph Aug 9 '10 at 8:05
@KonradRudolph, I am trying to run your code, but I get: Undefined control sequence for 3rd line of algorithm block. I would be really happy if you help me figure it out. –  Naji Apr 17 '13 at 23:49
@Naji Just remove the \DNA macros or define it appropriately. –  Konrad Rudolph Apr 18 '13 at 1:19
@Naji Erm, that wasn’t what I said. But apparently your problem stems from something else: you need to load the fontspec package, load a font, and use XeLaTeX for compilation. Sorry, my answer should have mentioned that. See the update. –  Konrad Rudolph Apr 19 '13 at 7:14

The FAQ page at http://www.tex.ac.uk/cgi-bin/texfaq2html?label=algorithms provides an overview of the various packages for typesetting pseudocode in LaTeX.

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I've used Algorithm2e successfully in the past.

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Try turning this into an answer by providing some insight as to why it was successful/useful, by providing a comparison with other packages, etc. –  Marc van Dongen Nov 30 '12 at 8:04

If you like the typesetting used in the Introduction to Algorithm, here is the page for clrscode, which includes package for both the second and third edition.

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I've been using listings package with mathescape=true option and a language definition to make it highlight my keywords. Something like that:

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