\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{dkarp}
\pdfinfo{
  /Title (algos.pdf)
  /Creator (Cheatography)
  /Author (dkarp)
  /Subject (Algos Cheat Sheet)
}

% Lengths and widths
\addtolength{\textwidth}{6cm}
\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{404040}
\definecolor{LightBackground}{HTML}{F3F3F3}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Algos Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{dkarp} via \textcolor{DarkBackground}{\uline{cheatography.com/138422/cs/29143/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}dkarp \\
  \uline{cheatography.com/dkarp} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 15th September, 2021.\\
   Updated 15th September, 2021.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Binary search - on sorted list - LogN}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{def bsearch(arr, target): \newline     left, right = 0, len(arr) - 1 \newline     while left \textless{}= right: \newline         mid = (left + right) // 2 \newline         val = arr{[}mid{]} \newline         if val == target: \newline             return mid \newline         elif val \textgreater{} target: \newline             right = mid - 1 \newline         else: \newline             left = mid + 1 \newline     return -1} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{Heap - LogN}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{import heapq \newline  \newline def heap\_min(arr): \newline     heapq.heapify(arr) \newline     return arr{[}0{]} \newline  \newline def heap\_max(arr): \newline     heaparr = {[}{]} \newline     for val in arr: \newline         heapq.heappush(heaparr, -1 {\emph{ val) \newline     return -1 }} heaparr{[}0{]}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{DFS - preorder - N}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{def dfs(root, target): \newline     def search(node): \newline         if not node: \newline             return \newline  \newline         if node.val == target: \newline             return node \newline  \newline         left = search(node.left) \newline         if left: \newline             return left \newline  \newline         right = search(node.right) \newline         if right: \newline             return right \newline  \newline     return search(root)} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.24425 cm} x{3.73275 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Collections}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{defaultdict} & \seqsplit{defaultdict(default\_factory=None)} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
\seqsplit{namedtuple} & namedtuple('Point', {[}'x', 'y'{]}) \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
deque & deque({[}iterable{[}, maxlen{]}{]}) \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
 & append(x) \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
 & appendleft(x) \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
 & pop() \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
 & popleft() \tn 
% Row Count 9 (+ 1)
% Row 7
\SetRowColor{white}
Counter & Counter({[}iterable-or-mapping{]}) \tn 
% Row Count 10 (+ 1)
% Row 8
\SetRowColor{LightBackground}
 & most\_common(n) \tn 
% Row Count 11 (+ 1)
% Row 9
\SetRowColor{white}
 & subtract({[}iterable-or-mapping{]}) \tn 
% Row Count 13 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{BFS - N}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{def bfs(root, target): \newline     queue = {[}root{]} \newline     while queue: \newline         node = queue.pop() \newline         if not node: \newline             continue \newline         if node.val == target: \newline             return node \newline  \newline         queue.append(node.left) \newline         queue.append(node.right) \newline     return None} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{3.38436 cm} x{1.59264 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Python Slices}}  \tn
% Row 0
\SetRowColor{LightBackground}
Slice & a{[}start:stop:step{]} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Elements after X & a{[}x:{]} \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
First X elements & a{[}:x{]} \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
Last X elements & a{[}-x{]} \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
Elements from X to Y not inclusive of Y & a{[}x:y{]} \tn 
% Row Count 7 (+ 2)
% Row 5
\SetRowColor{white}
Reverse List & a{[}::-1{]} \tn 
% Row Count 8 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}