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Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question
A sandwich string is a string with length of at least three, the first and last character are equal, and the characters in the middle are all the same but not equal to the first and last character. wooow is an example of a sandwich string.
Make a python (py3)
For example,
Input is:
qhadaaadwq
Output will be:
['ada', 'daaad']
Other examples:
Input:
poooop
Output will be:
['poooop']
Input:
ahaaadahah
Output will be:
['ada', 'aha', 'hah']
Input:
science
Output will be:
[]
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