# How to set a line between begin and end?

\documentclass{article}

\usepackage[utf8]{inputenc}

\usepackage{latexsym}

\usepackage[linesnumbered,ruled,vlined]{algorithm2e}

\usepackage{nameref}
\renewcommand{\labelitemi}{$\bullet$}
\usepackage{enumerate}
\usepackage{caption}
%\captionsetup[figure]{labelfont=bf}
\captionsetup{labelsep=none}
\usepackage{subcaption}
\usepackage[compatibility=false]{caption}

\RestyleAlgo{boxruled}
\LinesNumbered

\usepackage{amsmath,amssymb,fancyhdr,url}
\usepackage{graphicx}

\usepackage{mathrsfs}
\usepackage{tabularx,environ,amsmath,amssymb}
\begin{document}
\begin{algorithm}[H]
\SetAlgoLined
\textbf{Input} : An a $p^t$, prime $p$,
integer $t$ and data s above\;
\textbf{Find} : A swq $G$\;
\vspace{0.3cm}
\textbf{begin}\;

\hspace{0.5cm} $L =\phi;B=\phi$\;
\hspace{0.5cm} repeat\;
\hspace{1cm} select largest ord$_G(a)$\;
\hspace{1cm} $B=B\cup \{a\}$\;
\hspace{1cm} $L^{'}$\;
\hspace{1cm} \textbf{for} (each $b \in L^{'}$) remove all elements in
$U(b)$ from $M$\;
\hspace{1cm} $L=L\cup L^{'}$\;
\hspace{0.5cm} until $(\sum_{a_j \in B}R(a_j) =t)$\;
\textbf{end}

\caption{Algorithm}
\end{algorithm}

\end{document}


Question : How to design a vertical line between begin and end statement of the algorithm?

See the output:

• For the future: Please format pasted code with the respective markdown. This increases readability ba a LOT :) Mar 21, 2019 at 17:14
• For Ravens comment: Hint if using a browser, you can highlight the code and hit Ctrl-k to get it formatted this way. Mar 21, 2019 at 17:24
• @daleif I do Ctrl-k but it works only for the first line of the code. Mar 21, 2019 at 17:45
• @regarding the formatting of code in questions: Select the block of code first and then press Ctrl+k or the {} button. Regarding your question: You might want to use \Begin, \End , \Input,... instead of \textbf{...} Mar 21, 2019 at 18:32

You need to use the keywords defined by algorithm2e. Here's a better markup that does just that:

\documentclass{article}

\usepackage[linesnumbered,ruled,vlined]{algorithm2e}

\SetKwInOut{KwInput}{Input}
\SetKwInOut{KwFind}{Find}

\begin{document}

\begin{algorithm}
\SetAlgoLined
\KwInput{An a $p^t$, prime $p$, integer $t$ and data s above}
\KwFind{A swq $G$}
\BlankLine
\Begin{
$L = \phi$; $B = \phi$\;
\Repeat{$\sum_{a_j \in B} R(a_j) = t$}{
select largest $\mathrm{ord}_G(a)$\;
$B = B \cup \{a\}$\;
$L'$\;
\For{each $b \in L'$}{
remove all elements in $U(b)$ from $M$\;
}
$L = L \cup L'$\;
}
}
\caption{Algorithm caption}
\end{algorithm}

\end{document}