String Rotation

January 31, 2012

We have today another question from our never-ending supply of interview questions:

Write a function that takes two input strings and determines if one is a rotation of the other. For instance, “ProgrammingPraxis” and “PraxisProgramming” are rotations of each other, but “ProgrammingPrasix” is not a rotation of “ProgrammingPraxis” because the last three letters are out of order.

Your task is to write the requested function. When you are finished, you are welcome to read or run a suggested solution, or to post your own solution or discuss the exercise in the comments below.

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