# Is it possible to draw vertical lines in algorithm (not algorithm2e) package?

My question is if it is possible to draw vertical lines in the algorithm package. I have seen the following question:

Vertical line for pseudo code

But I don't want to use algorithm2e because it changes the format of the algorithm. Is it possible to handle that with the algorithm package?

Welcome to TeX-SE! With tikz and tikzmark you can certainly add lines. Whether or not this is the most efficient way to produce such an output, i.e. whether or not there is a package that does all that out of the box, I do not know.

\documentclass[two column,conference]{IEEEtran}
\usepackage{tikz}
\usetikzlibrary{tikzmark}
\usepackage{algorithm}
\begin{document}
\begin{algorithm}
\caption{HD}
\label{array-sum}
1: Initialization of parameters \\
2: Randomly generate population using Eq. 28\\
\tikzmarknode{3}{3}: \textbf{for} u=1:k \\
\tikzmarknode{4}{4}: \textbf{for} s=1:i$_{c}$\\
5:  Randomly generated X$_{s}^{u}$ in da\\
\tikzmarknode{6}{6}: \textbf{end for} \\
\tikzmarknode{7}{7}: \textbf{end for}\\
8: End of initialization step\\
9: \textbf{While} Maximum number of iteration reached \textbf{do}\\
10:  Construction and assessment of new candidate\\
11: \textbf{if} ($rand (0,1)\leq$ cpu)\\
12: Choose random no \\
13: \textbf {if} ($rand (0,1 ) \leq$ cpu) \\
14:  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
15: \textbf{end if} \\
16: \textbf{else} \\
17: Evaluate fitness function a: F(a) using Eq. 17\\
27: End of the construction and assessment step\\
28: Construction and assessment of new candidate: a   \\
29: if (F(y) has best value than the worst member \\
30: Replace DA member with new candidate: a\\
31: else\\