public class Exercise$06\_$RaceDay $\{$

$/*$

$*$ Registration for your company's annual $10$K is underway.

$*$ Participants are assigned to a block based on their age $($int$)$ and whether

$*$ they registered early $($boolean$).$

$*$

$*$ Return a participant's block according to the following criteria:

$*$ If they are $>=18$ and registered early, they join the first block.

$*$ If they are $>=18$ and did not register early, they join the second block.

$*$ If they are $<18,$ they join the third block.

$*$

$*$ Given a runner's age $($int$)$ and early$-$registration status $($boolean$),$ return

$*$ their assigned race block:

$*$

$*$ Examples:

$*$ determineRaceBlock$(17,$ false$)3$

$*$ determineRaceBlock$(17,$ true$)3$

$*$ determineRaceBlock$(18,$ false$)2$

$*$ determineRaceBlock$(18,$ true$)1$

$*$ determineRaceBlock$(30,$ false$)2$

$*$ determineRaceBlock$(30,$ true$)1$