a function that takes 1,2,3 and returns 3,1,2 respectively and vice verse

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Published on 2010-03-12T07:14:15Z Indexed on 2010/03/12 8:07 UTC
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Is there a function that takes 1,2,3 and returns 3,1,2 respectively and vice-verse. eg: f(1)=3 f(2)=1 f(3)=2

This is required to get the cyclic order eg 1 when gone left will be 3 , 2 will be 1 and 3 will be 2. 1 when gone right will be 2 , 2 will be 3 and 3 will be 1.

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