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+++ b/manipulating_strings/questions.rst	Wed Dec 01 16:51:35 2010 +0530
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+Objective Questions
+-------------------
+
+.. A mininum of 8 questions here (along with answers)
+
+1. Given the list week::
+
+     ["sun", "mon", "tue", "wed", "thu", "fri", "sat"]
+
+   ``"Sun" in week`` returns True or False?
+
+   Answer: False
+   
+#. Given the string ``s = "palindrome"``, what is returned by s[4:]
+
+   Answer: ``ndrome``
+
+#. Given the string ``s = "palindrome"``, what is returned by s[-4]
+
+   Answer: ``r``
+
+#. Given the string ``s = "palindrome"``, what is returned by s[4::-1]
+
+   Answer: ``nilap``
+
+#. Given the string ``s = "palindrome"``, what is returned by s[-4:]
+
+   Answer: ``rome``
+
+#. Given a string ``s = "this is a string"``, how will you change it
+   to ``"this isn't a list"`` ?
+
+   Answer::
+   
+     s = s.replace("string", "list")
+     s = s.replace("is", "isn't")
+
+#. Given a string ``s = "this is a string"``, how will you change it
+   to ``"THIS ISN'T A LIST"`` ?
+
+   Answer::
+   
+     s = s.replace("string", "list")
+     s = s.replace("is", "isn't")
+     s = s.upper()
+
+#. Given a line from a CSV file (comma separated values), convert it
+   to a space separated line. 
+
+   Answer: line.replace(',', ' ')
+
+#. Given the string "F.R.I.E.N.D.S" in s, obtain the "friends".
+
+   Answer: ``s[::2].lower()``
+
+Larger Questions
+----------------
+
+.. A minimum of 2 questions here (along with answers)
+
+1. Given the string friends, obtain the string "F.R.I.E.N.D.S". 
+
+   Answer::
+   
+     s = "friends"
+     s = s.upper()
+     s_list = list(s)
+     ".".join(s_list)
+
+2. Given a string with double quotes and single quotes. Interchange
+   all the double quotes to single quotes and vice-versa. [Solve it
+   for this particular string. Not a generic one. Solve it for a
+   generic string, if you know how to iterate over a list.]
+
+   s = """ "Isn't this a 'simple' task?" "No, it isn't." "Yes! it is." """
+
+   Answer::
+   
+     s = s.replace('"', '#')
+     s = s.replace("'", '"')
+     s = s.replace('#', "'")        
+
+   .. depends on ``for`` which is not an LO dependency a generic string. 
+   
+   For generic string
+   Answer:: 
+
+     S = []
+     s_list = s.split("'")
+
+     for s_s in s_list:
+         S.append(s_s.replace('"', "'"))
+
+     s = '"'.join(S)