Algorithm left margin and Comment Customizing - latex

Question

I'm trying to save space, reduce both margins of the algorithm in 1, and add a comment after the "do" in line 1 (see the problem in red). All my tentatives failed. I only could place the comment between the "SemCompositeIndex" and the "do."
Its compilable code follows:
\documentclass{article}
\usepackage{mdframed}
\usepackage[noend,linesnumbered,ruled,vlined]{algorithm2e}
\makeatletter
%Remove right hand margin in algorithm
\patchcmd{\#algocf#start}% <cmd>
{-1.5em}% <search>
{0pt}% <replace>
{}{}% <success><failure>
\makeatother
\begin{document}
\begin{algorithm}
\SetAlgoLined
\SetKwInOut{Input}{input}
\SetKwInOut{Output}{output}
\Input{SemCompositeIndex \tcp*[f]{XXX}(a)}
\Output{CSemCompositeIndex \tcp*[f]{YYY}(b)}
\ForEach{entry $\in$ SemCompositeIndex \tcp*[f]{XXX}}{
CSemCompositeIndex.put(entry.compositeKey, compressMatchCounter(entry.matchCounter)) \tcp*[f]{ZZZ}}
\caption{Compress}
\label{alg:compress}
\end{algorithm}
\end{document}
I'm new here. Let me know if I need to put more details!
Thank you so much for your attention and participation.
Happy new year to all of us!

Answer 1

To place a comment after the condition of the for loop, you can use \ForEach(\tcp*[f]{XXX}){...}{....}
\documentclass{article}
\usepackage{mdframed}
\usepackage[noend,linesnumbered,ruled,vlined]{algorithm2e}
\setlength{\algomargin}{15pt} %#Werner Solution for left margin
\makeatletter
%Remove right hand margin in algorithm
\patchcmd{\#algocf#start}% <cmd>
{-1.5em}% <search>
{0pt}% <replace>
{}{}% <success><failure>
\makeatother
\begin{document}
\begin{algorithm}
\SetAlgoLined
\SetKwInOut{Input}{input}
\SetKwInOut{Output}{output}
\Input{SemCompositeIndex \tcp*[f]{XXX}(a)}
\Output{CSemCompositeIndex \tcp*[f]{YYY}(b)}
\ForEach(\tcp*[f]{XXX}){entry $\in$ SemCompositeIndex }{
CSemCompositeIndex.put(entry.compositeKey, compressMatchCounter(entry.matchCounter)) \tcp*[f]{ZZZ}}
\caption{Compress}
\label{alg:compress}
\end{algorithm}
\end{document}

Answer 2

This is the default layout of an algorithm when using algorithm2e:
\documentclass{article}
\usepackage[noend,linesnumbered,ruled,vlined]{algorithm2e}
%\setlength{\algomargin}{0pt}
\begin{document}
\begin{algorithm}[H]
\SetAlgoLined
\KwData{this text}
\KwResult{how to write algorithm with \LaTeX2e }
initialization\;
\While{not at end of this document}{
read current\;
\eIf{understand}{
go to next section\;
current section becomes this one\;
}{
go back to the beginning of current section\;
}
}
\caption{How to write algorithms}
\end{algorithm}
\end{document}
You can use \setlength{\algomargin}{<len>} to change the margins. For example, this is what \setlength{\algomargin}{0pt} looks like:
The default (first image above) is \leftskip + \parindent.