Extra Credit #5

Due: June 5, 2014 at 11:55pm (Note different time)
Points: 30

These two parts have you modify the output to the program “xref2.py” from the last question in the homework. The two parts are independent; you can do neither, either, or both.

1. (10 points) Take your program “xref2.py” and alter it so that the field width for the words is the length of the longest word in the dictionary. So, for the file “alice.txt”, the first few lines of the output should be:

   
   0              36
   11             13
   1994           14
   20             15
   2008           13
   2011           15
   25             13
   3              36
   A              59
   ADVENTURES     21, 32
   ALICE          21, 32
   ASCII          19
   

   Notice that the numbers are closer to the words than in the homework assignment. As the longest word in that file is “disappointment” (14 letters), the field width for the words is 14, followed by a blank, followed by the list of line numbers.

   Submit. Name your file “xrefx1.py” and submit it to the Extra Credit #5 area for this class on SmartSite.

2. (20 points) Modify your program in “xref2.py” to eliminate duplicate line numbers in the list of line numbers printed for each word. So, for the file “alice.txt”, the last few lines of the output should be:

   
   words                       101, 170
   world                       68
   worth                       51
   would                       51, 94, 148, 158, 159
   wouldn                      89
   written                     112
   www                         6
   yes                         99
   you                         95, 108, 109, 110, 117, 118, 119, 122, 126, 155, 161, 179, 181, 182
   your                        179
   

   Compare this to the output for the last question in Homework #5; in particular, notice that the line numbers 110 and 179 occur once only.

   Submit. Name your file “xrefx2.py” and submit it to the Extra Credit #5 area for this class on SmartSite.