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From ab to ba (Posted on 2019-01-17) Difficulty: 3 of 5
Given a string of 2 letters ab, your task is to convert it into ba. You are allowed to add either aa or bb on either side of a current string or into the string, like ab=>abaa=>abbb=>aaabbb=>aaabaabb.
You are also allowed to erase either aa or bb any place like aaabbb=>abbb.
Is it possible? If so, how?

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Solution?Jer2019-01-17 12:10:50
SolutionHow to do it (spoiler)Steve Herman2019-01-17 12:08:16
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