I'm trying to learn the algorithmic package for typesetting pseudocode. One problem I'm running into is that I can't figure out how to insert blank lines, to separate blocks of code. The usual \\ or starting a new paragraph doesn't seem to work. How can I insert blank lines in in the algorithmic environment?
[Tex/LaTex] How to add a blank line in the algorithmic environment
algorithmspseudocode
Related Solutions
The problem seems to be that the algorithmic environment needs to be able to "see" the commands \State, \For, \EndFor at the top level. It doesn't like having them in the \alert environments. One way around this is to simulate the alerting by merely changing the text colour on each line. Here's a way to do it:
\documentclass[ignorenonframetext]{beamer}
\usepackage{algpseudocode}
\newcommand{\alertline}{%
\usebeamercolor[fg]{normal text}%
\only{\usebeamercolor[fg]{alerted text}}}
\begin{document}
\section{Blah}
\begin{frame}
\frametitle{Blah}
\begin{columns}
\begin{column}{.4\hsize}
\begin{algorithmic}
\alertline<1>\State $z \gets 1$
\alertline<2>\For {$i = 1 \to n$}
\alertline<3>\State $z \gets z + \frac{1}{i}$
\alertline<4>\EndFor
\end{algorithmic}
\end{column}%
\begin{column}{.6\hsize}
Some text discussing the current line.
\end{column}
\end{columns}
\end{frame}
\end{document}
This approach doesn't work if you want the background to be highlighted as that puts the text in a \colorbox which seems to hide it from the algorithmic environment.
(Note: my suppositions about what's happening are based purely on observation and not on any knowledge of what's going on under the bonnet.)
The command \hline works only inside tables. To draw a line about the whole width you can use the command \hrulefill.
\STATEstems from thealgorithmsbundle, while the more advanced and recentalgorithmicxpackage defines\State.
\documentclass{article}
\usepackage{algpseudocode}
\usepackage{algorithm}
\begin{document}
\begin{algorithm}
\caption{Caption}
\begin{algorithmic}
\State algorithm here
\\\hrulefill
\State part 2 here
\end{algorithmic}
\end{algorithm}
\end{document}
The result is:
If you want special line formating you can also use every other tool to draw a line. This is the simplest solution.
Best Answer
If you want the empty line to be numbered, just insert
on this line.
If you want an unnumbered empty line, insert
instead.