There’s a great package in LaTex called algorithm to help format psuedo-code algorithms for scientific papers. Here’s a simple example of its usage:

\usepackage{algorithm}
\usepackage[noend]{algpseudocode}
\begin{algorithm}
\caption{Even Numbers}
\begin{algorithmic}[1]
\State Set variable $evens$ to an empty list.
\For {every integer $i$}
  \If {$i$ is divisible by $2$}
    \State Add $i$ to $events$ list.
  \EndIf
\EndFor
\end{algorithmic}
\end{algorithm}