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% Created 2011-05-24 Tue 11:31
\documentclass[presentation]{beamer}
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{fixltx2e}
\usepackage{graphicx}
\usepackage{longtable}
\usepackage{float}
\usepackage{wrapfig}
\usepackage{soul}
\usepackage{textcomp}
\usepackage{marvosym}
\usepackage{wasysym}
\usepackage{latexsym}
\usepackage{amssymb}
\usepackage{hyperref}
\tolerance=1000
\usepackage[english]{babel} \usepackage{ae,aecompl}
\usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
\usepackage{listings}
\lstset{language=Python, basicstyle=\ttfamily\bfseries,
commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
showstringspaces=false, keywordstyle=\color{blue}\bfseries}
\providecommand{\alert}[1]{\textbf{#1}}
\title{}
\author{FOSSEE}
\date{}
\usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
\begin{document}
\begin{frame}
\begin{center}
\vspace{12pt}
\textcolor{blue}{\huge Getting started with Strings}
\end{center}
\vspace{18pt}
\begin{center}
\vspace{10pt}
\includegraphics[scale=0.95]{../images/fossee-logo.png}\\
\vspace{5pt}
\scriptsize Developed by FOSSEE Team, IIT-Bombay. \\
\scriptsize Funded by National Mission on Education through ICT\\
\scriptsize MHRD,Govt. of India\\
\includegraphics[scale=0.30]{../images/iitb-logo.png}\\
\end{center}
\end{frame}
\begin{frame}
\frametitle{Objectives}
\label{sec-2}
At the end of this tutorial, you will be able to,
\begin{itemize}
\item Define strings in differnt ways.
\item Concatenate strings.
\item Print a string repeatedly.
\item Access individual elements of the string.
\item Learn immutability of strings.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Exercise 1}
\label{sec-3}
Obtain the string \verb~%% -------------------- %%~ (20 hyphens) without
typing out all the twenty hyphens.
\end{frame}
\begin{frame}[fragile]
\frametitle{Exercise 2}
\label{sec-4}
Given a string, \verb~s~ which is \verb~Hello World~ , what is the output of::
\lstset{language=Python}
\begin{lstlisting}
s[-5]
s[-10]
s[-15]
\end{lstlisting}
\end{frame}
\begin{frame}
\frametitle{Summary}
\label{sec-5}
In this tutorial, we have learnt,
\begin{itemize}
\item To define strings in differnt ways.
\item To concatenate strings by performing addition.
\item To repeat a string `n' number of times by doing multiplication.
\item To access individual elements of the string by using their subscripts.
\item Use the concept of immutability of strings.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Evaluation}
\label{sec-6}
\begin{enumerate}
\item Write code to assign s, the string ``' is called the apostrophe``
\vspace{8pt}
\item Given strings s and t, ``s = ``Hello''`` and ``t = ``World''`` and an
integer r, ``r = 2``. What is the output of s * r + s * t?
\vspace{8pt}
\item How will you change s='hello' to s='Hello'.
\begin{itemize}
\item s[ 0 ]= H
\item s[ 0 ]='H'
\item strings are immutable,hence cannot be manipulated.
\end{itemize}
\end{enumerate}
\end{frame}
\begin{frame}
\frametitle{Solutions}
\label{sec-7}
\begin{enumerate}
\item s = ``` is called the apostrophe''
\vspace{8pt}
\item HelloHelloWorldWorld
\vspace{8pt}
\item Strings are immutable,hence cannot be manipulated.
\end{enumerate}
\end{frame}
\begin{frame}
\begin{block}{}
\begin{center}
\textcolor{blue}{\Large THANK YOU!}
\end{center}
\end{block}
\begin{block}{}
\begin{center}
For more Information, visit our website\\
\url{http://fossee.in/}
\end{center}
\end{block}
\end{frame}
\end{document}
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