29

algpseudocode lets me write code such as:

\documentclass{article}
\usepackage{algpseudocode}
\begin{document}

\begin{algorithmic}
\While{$n>3$}
   \If{$m>n$}
      \State ...
      \State ...
   \EndIf
   \If{$m>2$}
      \State ...
   \EndIf
\EndWhile
\end{algorithmic}

\end{document}

Yielding results similar to

while n>3
   if m>n
       ...
       ...
   end if
   if m>2
       ...
   end if
end while

I'd like all of that "end if", "end while", "end procedure" text to disappear and everything to compress upwards such that the result is:

while n>3
   if m>n
       ...
       ...
   if m>2
       ...

That is, I'd like a Pythonic-style where indentations indicate blocks.

Can algpseudocode do this? Or is there another package with similar functionality?

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3
  • Adding \algdef{SE}[WHILE]{While}{EndWhile}[1]{\algorithmicwhile\ #1\ \algorithmicdo}{}% \algdef{SE}[IF]{If}{EndIf}[1]{\algorithmicif\ #1\ \algorithmicthen}{}% will eliminate the text, but leaves a blank line. Commented Apr 9, 2012 at 17:03
  • @Richard: Was working on fixing that but egreg was faster!! Commented Apr 9, 2012 at 17:09
  • But, alas, @PeterGrill, egreg's solution with line numbering on results in unnumbered lines dangling off the bottom of the algorithm. Commented Apr 9, 2012 at 17:12

3 Answers 3

Reset to default
25

Instead of (re)defining the way \While and \If works, you can remove the "end line" text via

\algtext*{EndWhile}% Remove "end while" text
\algtext*{EndIf}% Remove "end if" text

Here's your MWE:

enter image description here

\documentclass{article}
\usepackage{algpseudocode}% http://ctan.org/pkg/algorithmicx
\algtext*{EndWhile}% Remove "end while" text
\algtext*{EndIf}% Remove "end if" text
\begin{document}

\begin{algorithmic}
\While{$n>3$}
   \If{$m>n$}
      \State ...
      \State ...
   \EndIf
   \If{$m>2$}
      \State ...
   \EndIf
\EndWhile
\end{algorithmic}

\end{document}​
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2
  • This is so elegant! It would have saved me so much trouble. Thanks! Commented Apr 27, 2012 at 2:05
  • Definitely worth it if you declare your own commands. +1. Commented May 16, 2016 at 1:53
99

Using the noend option as in

\usepackage[noend]{algpseudocode}

yields

enter image description here

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4
  • 8
    Why is this not upvoted more? This solution is definitely neater than the others... Commented Apr 30, 2013 at 20:44
  • 4
    Yes, this is the standard practice. Commented Oct 15, 2013 at 3:43
  • This gives me a compilation error: Option clash for package algpseudocode. and no more info. Commented Apr 28, 2015 at 17:50
  • 3
    is it possible to locally activate this option for some algorithm and not for others? Commented Jul 8, 2019 at 14:37
11

You can say

\algdef{SxnE}[WHILE]{While}{EndWhile}[1]{\algorithmicwhile\ #1\ \algorithmicdo}
\algdef{SxnE}[IF]{If}{EndIf}[1]{\algorithmicif\ #1\ \algorithmicthen}
\algdef{cxnE}{IF}{Else}{EndIf}

Look for the \algdef lines in algpseudocode.sty for other constructs to modify.

The flag SxnE means that there's a "start line", but no "end line".

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3
  • Isn't it SxNE? Because in the docs, xN means "ending command, with no text for this block" and there is no xn. Commented May 16, 2016 at 2:12
  • @logo_writer I don't remember; on the other hand, this appears to work Commented May 16, 2016 at 7:44
  • @egreg I can confirm that SxNE works too! And indeed, SxnE also. I guess it is an undocumented feature. Commented May 17, 2016 at 6:33

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