Any way, now we got both cases covered, and hope there is no third one.

I think there is a third one. The way his code works makes it clear. He wants not just one string back but a list of them. Each string is exactly the same as the original with exactly one letter pair reversed. Using your example of 

"01234567"

[download]
the list would be 
('10234567', 
 '02134567', 
 '01324567', 
 '01243567', 
 '01235467', 
 '01234657', 
 '01234576')

[download]
Notice that the list will always contain one less element than the number of characters in the original string.

I agree that his English explanation would seem to suggest Zaxo's solution. His code, however, suggests the above explanation.

-sauoq
"My two cents aren't worth a dime.";

In reply to Re: Re: Transposition of each letter pair in string by sauoq
in thread Transposition of each letter pair in string by Cody Pendant

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