\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
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%\usepackage[utf8x]{inputenc}    % For unicode character support
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\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{sally sung}
\pdfinfo{
  /Title (introduction-to-programming-final-term.pdf)
  /Creator (Cheatography)
  /Author (sally sung)
  /Subject (Introduction to programming - Final Term Cheat Sheet)
}

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% This two commands together give roughly
% the right line height in the tables
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% 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
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% 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{Introduction to programming - Final Term Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{sally sung} via \textcolor{DarkBackground}{\uline{cheatography.com/216190/cs/47489/}}}
\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}sally sung \\
  \uline{cheatography.com/sally-sung} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 12th December, 2025.\\
   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*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{While}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{while (!isValid) \newline \{ \newline     Console.WriteLine("Enter score\{0\}: ", i + 1); \newline     inValue = Console.ReadLine(); \newline     isValid = int.TryParse(inValue, out score{[}i{]}); \newline  \newline     if (!isValid) \newline     \{ \newline         \seqsplit{Console.WriteLine("Invalid} data entered -" + "0 stored in array"); \newline     \} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.32 cm} x{5.68 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Arrays}}  \tn
% Row 0
\SetRowColor{LightBackground}
Array Declare & int{[}{]} scores = new int{[}14{]}; \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Array Initialize & int{[}{]} anArray = \{ 100, 200, 400, 600 \}; \tn 
% Row Count 4 (+ 2)
% Row 2
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Copy & Copy (System.Array sourceArray, int index1Source, System.Array targetArray, int index1Target, int lengthToCopy) \tn 
% Row Count 8 (+ 4)
% Row 3
\SetRowColor{white}
Read User Input & inValue = Console.ReadLine(); \tn 
% Row Count 10 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{3.2 cm} x{4.8 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Advanced Collections}}  \tn
% Row 0
\SetRowColor{LightBackground}
Two dimensional Arrays & int{[},{]} calories = \{     \{ 900, 750, 1020 \},      \{ 300, 100, 2700 \},      \{ 200,300,5500 \}  \}; \tn 
% Row Count 4 (+ 4)
% Row 1
\SetRowColor{white}
Two dimensional Arrays Init & int{[},{]} calories = new int{[}7,3{]}; \tn 
% Row Count 6 (+ 2)
% Row 2
\SetRowColor{LightBackground}
ArrayList & ArrayList anArray = new ArrayList( );  // Instantiates ArrayList \tn 
% Row Count 9 (+ 3)
% Row 3
\SetRowColor{white}
List & List\textless{}Item\textgreater{} items = new List\textless{}Item\textgreater{}() \tn 
% Row Count 11 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Two dimensional Arrays Example}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public static double{[}{]} CalulateAverageByDay(int{[},{]} calories) \{ \newline     int sum = 0; \newline     double{[}{]} dailyAverage = new double{[}7{]}; \newline     // 7  \newline     for (int r = 0; r \textless{} calories.GetLength(0); r++) \{ \newline         // 3  \newline         for (int c = 0; c \textless{} calories.GetLength(1); c++) \{ \newline             sum += calories{[}r, c{]}; \newline         \} \newline         dailyAverage{[}r{]} = (double) sum / calories.GetLength(1); \newline         sum = 0; \newline     \} \newline     return dailyAverage; \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.8 cm} x{5.2 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Programming Based on Events}}  \tn
% Row 0
\SetRowColor{LightBackground}
Delegates & delegate string ReturnsSimpleString( ); \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
Event Handler  Methods & this.button1.Click += new \seqsplit{System.EventHandler(this.button1\_Click);} \tn 
% Row Count 5 (+ 3)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2 cm} x{6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Object Oriented Language Features}}  \tn
% Row 0
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\seqsplit{Abstraction} & Generalizing, identifying essential features, hiding nonessential complexities \tn 
% Row Count 3 (+ 3)
% Row 1
\SetRowColor{white}
\seqsplit{Encapsulation} & Packaging data and behaviors into a single unit, hiding implementation details \tn 
% Row Count 6 (+ 3)
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\seqsplit{Inheritance} & Extending program units to enable reuse of code \tn 
% Row Count 8 (+ 2)
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\seqsplit{Polymorphism} & Providing multiple (different) implementations of same named behaviors \tn 
% Row Count 11 (+ 3)
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\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2.48 cm} x{5.52 cm} }
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\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Component based applications}}  \tn
% Row 0
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Business layer & Classes that perform processing / Provide functionality for specific system; provide necessary processing \tn 
% Row Count 4 (+ 4)
% Row 1
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Data access layer & Classes for accessing data from text files and database \tn 
% Row Count 7 (+ 3)
% Row 2
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\seqsplit{Presentation} layer & User interface tier for user interaction / Graphical User Interface such as Windows or Web \tn 
% Row Count 11 (+ 4)
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
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% Row 0
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\mymulticolumn{1}{x{8.4cm}}{Associated with an "is a" relationship} \tn 
% Row Count 1 (+ 1)
% Row 1
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\mymulticolumn{1}{x{8.4cm}}{Classes can also have a "has a" relationship, not associated with inheritance} \tn 
% Row Count 3 (+ 2)
% Row 2
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\mymulticolumn{1}{x{8.4cm}}{"has a" relationship is associated with containment or aggregation (집합)} \tn 
% Row Count 5 (+ 2)
% Row 3
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\mymulticolumn{1}{x{8.4cm}}{Every object inherits four methods (Equals / GetHashCode / GetType / ToString)} \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
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\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Overriding Methods}}  \tn
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\mymulticolumn{1}{x{8.4cm}}{// In order to be an method that can be overridden, keyword "virtual", "abstract", or "override" must be part of the heading for the parent class  \newline public override string ToString() \{ \newline 	return firstName + " " + lastName; \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Creating Derived classes}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{public class Student: Person \{ \newline 	private string major; \newline 	private string studentId; \newline  \newline 	public Student(string id, string lName, string fName, int age, string major, string sId ) \newline 	: base(id, lName, fName, age) \{ \newline 	\} \newline \}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.44 cm} x{6.56 cm} }
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\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Abstract}}  \tn
% Row 0
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\seqsplit{Classes} & public abstract class Example \{\} \tn 
% Row Count 1 (+ 1)
% Row 1
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\seqsplit{Methods} & public abstract string Method(); \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
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\mymulticolumn{1}{x{8.4cm}}{// Reduce the need to rewrite algorithms for each data type  \newline public class GenericClass\textless{}T\textgreater{} \newline \{ \newline 	public T dataMember; \newline \} \newline GenericClass \textless{}string\textgreater{} anIdentifier = new GenericClass\textless{}string\textgreater{}();} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{2 cm} x{6 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Working with Files}}  \tn
% Row 0
\SetRowColor{LightBackground}
Import & using System.IO; \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Exist & File.Exists(fileName) \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{Enumeration} & public enum DayOfWeek \{ 	Sunday, Monday, Tuesday, Wednesday, 	Thursday, Friday, Saturday  \}  Console.WriteLine("Today is \{0\}!", DayOfWeek.Tuesday); \tn 
% Row Count 7 (+ 5)
% Row 3
\SetRowColor{white}
\seqsplit{DirectoryInfo} & DirectoryInfo dir = new DirectoryInfo("."); \tn 
% Row Count 9 (+ 2)
% Row 4
\SetRowColor{LightBackground}
\seqsplit{StreamWriter} & StreamWriter outputFile = new \seqsplit{StreamWriter("saying.txt");} outputFile.WriteLine("This is the first line in a text file"); \tn 
% Row Count 13 (+ 4)
% Row 5
\SetRowColor{white}
\seqsplit{StreamReader} & StreamReader inputFile = new \seqsplit{StreamReader("someInputFileName");} string inValue = inputFile.ReadLine(); \tn 
% Row Count 17 (+ 4)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{x{1.44 cm} x{6.56 cm} }
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\mymulticolumn{2}{x{8.4cm}}{\bf\textcolor{white}{Inheritance - Access Modifiers}}  \tn
% Row 0
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public & Accessible everywhere \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\seqsplit{private} & Accessible only within the class \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{protected} & Accessible within the class and derived classes \tn 
% Row Count 4 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


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

\end{document}