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Consider the following algorithm // L is a list and n is its length // For the purpose of this assignment we assume that n= 4**k , for k1 //
Considerthefollowingalgorithm
//Lisalistandnisitslength
// Forthepurposeofthisassignmentweassumethatn=4**k,forkā„1
// Alg1(L,n)
removethesmallestandlargestelement fromL
if n-2 >(4**k)/2
call Alg1(L, n-2)
a) Whatisthealgorithmintendedtodo?
b) Isitcorrect? Ifitisnotcorrectdiscovertheerror(s)whentryingtoprove correctnessandfixit(them). Then,reprovethecorrectness.
c) Whatisitstimecomplexity?
d) Canitbeimproved? Youmayuseanyalgorithmdiscussedinclass.