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Best Case

Partition yields subarrays of size n/2 each.

T(n) = 2T(n/2) + $\Theta(n)$

a=2, b=2, f(n) = $\Theta(n)$ = $\Theta(n^{log_2 2})$ = $\Theta(n^1)$ , Case 2

T(n) = $\Theta(n lg n)$

Average Case

$\Theta(n lg n)$

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