$//$ index $01234567891011$

int$[]$ numbers $=\{-1,3,5,8,15,18,22,39,40,42,50,57\}$;

What indexes will be examined as the middle element by a binary search for each of the following target values? $($the mid values in our algorithm's code from this chapter$)($Write them out as a comma separated list such as $1,2,3.)$ What value will be returned?

$13$

$39$

$50$

$2$