Fit three algorithms in a single page

Question

I am using the algorithm2e package to write algorithms. I have three algorithms that I want to put in a single page. I tried using subfigures and minipages but it got me no where. Any help to get me started is appreciated. Thank you.

Answer 1

You may only have 2 algorithms appearing on a page because of the default settings for floats in LaTeX. If you want more floats on a page, follow the guidance listed in How can I adjust the number of figures LaTeX will display on a page.

Another option is to put them all in the same float (say, a figure) and then use the [H]ere option to make the algorithms not float.

\documentclass{article}
\usepackage[ruled]{algorithm2e}
\SetKwInput{Input}{Input}
\SetKwInput{Output}{Output}
\begin{document}
Here is some text.
\begin{figure}
  \begin{algorithm}[H]
    \caption{First algorithm}
    \Input{input A}
    \Output{output A}
    A statement;
  \end{algorithm}
\vspace{\floatsep}
\begin{algorithm}[H]
    \caption{Second algorithm}
    \Input{input B}
    \Output{output B}
    A statement;
  \end{algorithm}
\vspace{\floatsep}
\begin{algorithm}[H]
    \caption{Third algorithm}
    \Input{input C}
    \Output{output C}
    A statement;
  \end{algorithm}
\end{figure}
Here is some more later in the document.
\end{document}

Answer 2

Just for fun:

\documentclass{article}
\usepackage[ruled]{algorithm2e}
\SetKwInput{Input}{Input}
\SetKwInput{Output}{Output}
\usepackage{paracol}
\globalcounter{algocf}
\begin{document}
Here is some text.
\begin{paracol}{3}
  \begin{algorithm}
    \caption{First algorithm}
    \Input{input A}
    \Output{output A}
    A statement;
  \end{algorithm}
\switchcolumn
  \begin{algorithm}
    \caption{Second algorithm}
    \Input{input B}
    \Output{output B}
    A statement;
  \end{algorithm}
\switchcolumn
  \begin{algorithm}
    \caption{Third algorithm}
    \Input{input C}
    \Output{output C}
    A statement;
  \end{algorithm}
\end{paracol}
Here is some more later in the document.
\end{document}