while$($arr$[$i$]<$ k$)\{$

i $+=3$;

$\}$

Assume that i corresponds to register $s$4$ and k corresponds to register $s$6.$ The base of the array arr is in

$s$1.$

Q$3(15$ points$)$ In the class we discussed a design principle of computer that states $$make the common

case faster$.$ Explain this design principle with an example of how it dictates the design of the instruction

set architecture of MIPS.