documentclass[11pt]{article}
linespread{1.25}
setlength{parindent}{15pt}
usepackage{ifxetex,ifluatex}
newififxetexorluatex
ifxetex
xetexorluatextrue
 else
 ifluatex
xetexorluatextrue
   else
xetexorluatexfalse
 fi
    fi
 usepackage[options ]{algorithm2e}
 SetKwInput{Kw}{Initialise}
  ifxetexorluatex
    usepackage{fontspec}
     else
    usepackage[T1]{fontenc}
       usepackage[utf8]{inputenc}
       usepackage{lmodern}
       fi
     usepackage{rotating}
     usepackage{indentfirst}
      usepackage{tikz}
      usepackage{changepage}
     usepackage[document]{ragged2e}
     usepackage{caption}
      usepackage{enumitem}
    setlist[itemize]{leftmargin=*}
     setlist[enumerate]{leftmargin=*}
      setlist[description]{leftmargin=*}
      usepackage{adjustbox}
      usepackage{wrapfig, blindtext}
      usepackage{booktabs}
     newcommandtab[1][1cm]{hspace*{#1}}
    usepackage{mathptmx}
      makeatother
      usepackage{amsmath}
     usepackage{setspace}
     usepackage{dsfont}
     usepackage{algorithm}
    usepackage{algorithmic}
       usepackage{natbib}
     usepackage{amssymb}
    usepackage[english]{babel}
        usepackage{hyperref}
      usepackage{graphicx}
     usepackage{xcolor}
     usepackage{listings}
      usepackage[margin=2.5cm]{geometry}

      begin{document}

documentclass[11pt]{article}
linespread{1.25}
setlength{parindent}{15pt}

 usepackage[document]{ragged2e}

      begin{document}

zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz
zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz
zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz
zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz zzzz
end{document}

LaTeX Warning: Command @arrayparboxrestore  has changed.
               Check if current package is valid.