in reply to Re^7: How do I reverse the order of the first and last word of a string?
in thread How do I reverse the order of the first and last word of a string?

Anyway, your code could be reduced by one line 
b = b + a ;
a = b - a ;
b = b - a ;

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Actually, I absolutely can't remember what my "original" code was really like. I "reconstructed" it this morning but didn't put much thought in it: just wanted to stick with with a scheme like that of the XOR trick, with the same operation on all (first three) lines. Of course, since XOR is again both plus and minus in Z_2, then the above code is equivalent to it too.

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