
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Write a function that takes a string as its only argument and returns a sorted list of characters used in the string. The resulting list should only contain lower case letters and each letter should exist only once. Also, the resulting list shouldn't contain any spaces or punctuation marks, such as ",;.!?". For example, strLetters("We are, the Champions!") returns ['a', 'c', 'e', 'h', 'i', 'm', 'n', 'o', 'p', 'r', 's', 't', 'w']
![Write a function that takes a string as its only argument and returns a sorted
list of characters used in the string. The resulting list should only contain
lower case letters and each letter should exist only once. Also, the resulting
list shouldn't contain any spaces or punctuation marks, such as ",;.!?". For
example,
strletters ("We are, the Champions!") returns
['a', 'c', 'e', 'h', 'i', 'm', 'n', 'o', 'p', 'r', 's', 't', 'w']
II II II](https://content.bartleby.com/qna-images/question/52ae6a60-7196-4bab-8a0e-665ad6e2a9cf/035c4154-0d46-4e56-a177-593c80c03fa9/g0y9xkp_thumbnail.png)
Transcribed Image Text:Write a function that takes a string as its only argument and returns a sorted
list of characters used in the string. The resulting list should only contain
lower case letters and each letter should exist only once. Also, the resulting
list shouldn't contain any spaces or punctuation marks, such as ",;.!?". For
example,
strletters ("We are, the Champions!") returns
['a', 'c', 'e', 'h', 'i', 'm', 'n', 'o', 'p', 'r', 's', 't', 'w']
II II II
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