7.2 Manipulating strings
========================

1. Slice strings and get sub-strings out of them
   * Check whether a particular string is valid for the given list(0.45 - 3.00)
   * Exercise 1: Obtain a sub-string excluding the first and last characters
                 from the string s(3.08 - 4.10)
   
#. Reverse strings.
   * Finding out, if a given string is palindromic or not(4.11 - 5.24)
 
#.Convert strings to upper or lower case.
   * Converting a string to lower/upper case(5.25 - 6.49)
   * Exercise 2: Combined exercise of sub-string and converting strings to upper/lower case(6.56 - 8.01)

#. Replace characters in strings. 
   * Example of replacing special characters in strings(8.02 - 9.18)
   * Exercise 3: Replace the ``[dot]`` with ``.``(9.27 - 10.06)
    
#. Join a list of strings
   * Example showing how to obtain one long string of e-mail addresses separated 
     by commas or semi-colons from a list of e-mail addresses(10.07 - 11.32)
   * Exercise 4: Change the seperator from a given string(11.39 - 12.29)

#. Summary(12.33 - 12.54)

#. Evaluation Questions(12.56 - 14.10)