Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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***python python ***
Write a function encoding() that takes a string and an integer as the parameters, and returns an encoded string.
The encoding is performed as follows. First, the given string is splited into two sub-strings, where characters at even poisitions is in one sub-string, characters at odd positions are in
the second sub-string. The two sub-strings are then put together, even character string first. Then, each character c is replaced by the character c' that is located the given integer
number of positions away from c in the ASCII character encoding table.
For example:
encoding('ABCabc' ,-10)
should return the new string '79X8WY'.
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