Define a single operation to alter the position of each letter by one place.

XEHCNAEGLAILPNIASRISUMTLNAOESUYL

May your solution be self-fulfilling.

Note: There are no tricks being used here.

(i) Divide the given letters in to groups of 2, to obtain:
XE, HC, NA, EG, LA, IL, PN,I A, SR, IS, UM, TL, NA, OE, SU, YL

(ii) Swap the letters in each group, to obtain:

EX, CH, AN, GE, AL, LI, NP, AI, RS, SI, MU, LT, AN, EO, US, LY

(iii) Join the group of letters in step (ii), allowing for due punctuation, to obtain:

"Exchange all in pairs simulteneously".

Edited on August 3, 2008, 7:17 am

Posted by K Sengupta on 2008-08-03 07:16:35