algpseudocode is not formatting properly in elsarticle template

Question

I am using algpseudocode to write pseudo code. I am noticed that the pseudo code is justify aligned, which doesn't look good here. Below is the snippet of latex code-

\usepackage{algorithm}
\usepackage[noend]{algpseudocode}

\begin{algorithm}
\caption{Generate Random Slides}
\label{algo:slide_generator}
\begin{algorithmic}[1]
    \Procedure{SlideGenerator}{}
    \State Let ${array\_temp}$ is a new list of length $\gets {array\_alph}.Length$
    \State  Let ${array\_slides}$ is a new list of length $\gets {array\_alph}.Length$
    \For{$i = 0 \to \textit{array\_alph}.Length$}
        \State $first\_char\_per\_slide \gets getUniqueChar(array\_temp)$
        \Comment Get unique character from ${array\_alph}$ which is not present in ${array\_temp}$
        \State $unique\_alph.Add(first\_char\_per\_slide)$
            \While{$used\_alph.Length < items\_per\_slide$}
                \State $unique\_alph.Add(getUniqueChar(unique\_alph))$
                \Comment Get unique character from $unique\_alph$ and add it to $unique\_alph$
            \EndWhile
    \EndFor
    \State $array\_slides [i] \gets current\_slide(unique\_alph)$
    \State $array\_temp.Add(first\_char\_per\_slide)$\\
    \Return $array\_slides$
    \EndProcedure
\end{algorithmic}
\end{algorithm}

Below is the screenshot of generated pdf-

I have following two questions-

1. How to correct the alignment?
2. Since the pseudo code is not looking better, How to modify the content of it?

I have the above code in C# But somehow I am not able to write a proper pseudo code. The above pseudo code uses System.Collections.Generic.List