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#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation]
#+BEAMER_FRAME_LEVEL: 1
#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent}
#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra)
#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC
#+LaTeX_CLASS: beamer
#+LaTeX_CLASS_OPTIONS: [presentation]
#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl}
#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet}
#+LaTeX_HEADER: \usepackage{listings}
#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries,
#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{darkgreen},
#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries}
#+TITLE:
#+AUTHOR: FOSSEE
#+EMAIL:
#+DATE:
#+DESCRIPTION:
#+KEYWORDS:
#+LANGUAGE: en
#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t
#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc
*
#+begin_latex
\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_latex
* Objectives
At the end of this tutorial, you will be able to,
- Define strings in differnt ways.
- Concatenate strings.
- Print a string repeatedly.
- Access individual elements of the string.
- Learn immutability of strings.
* Exercise 1
Obtain the string ~%% -------------------- %%~ (20 hyphens) without
typing out all the twenty hyphens.
* Exercise 2
Given a string, ~s~ which is ~Hello World~ , what is the output of::
#+begin_src python
s[-5]
s[-10]
s[-15]
#+end_src
* Summary
In this tutorial, we have learnt,
- To define strings in differnt ways.
- To concatenate strings by performing addition.
- To repeat a string 'n' number of times by doing multiplication.
- To access individual elements of the string by using their subscripts.
- Use the concept of immutability of strings.
* Evaluation
1. Write code to assign s, the string ``' is called the apostrophe``
2. 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?
3. How will you change s='hello' to s='Hello'.
- s[ 0 ]= H
- s[ 0 ]='H'
- strings are immutable,hence cannot be manipulated.
* Solutions
1. s = "` is called the apostrophe"
2. HelloHelloWorldWorld
3. Strings are immutable,hence cannot be manipulated.
*
#+begin_latex
\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_latex
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