public class VaccineTrialVolunteer {
public VaccineTrialVolunteer(String id, boolean placebo) {
...
}
public String getId() {
...
}
/* Whether the volunteer was given a placebo or the actual vaccine */
public boolean isPlacebo() {
...
}
/* Whether the volunteer got sick during the trial period,
* the default value for this should be false */
public boolean gotSick() {
...
}
/*
* Updates whether the participant got sick during the trial period
*/
public void setGotSick(boolean gotSick) {
...
}
}
public class VaccineTrial {
// Add any needed fields here
/**
* Adds a new VaccineTrialVolunteer to the trial
*
* @param id The id of the volunteer
*
* @param placebo Whether the volunteer was given a placebo, or the actual
* vaccine
*/
public void addVolunteer(String id, boolean placebo) {
// TODO
}
/**
* Returns whether the vaccine's effectiveness rate is higher than the provided
* limit. The effectiveness of the vaccine is calculated as follows:
*
* 1- (number of people that received the vaccine and got sick/
* number of people that got sick)
*
* If there is no sick people, the vaccine is not effective
*
* @param limit A limit to compare against
*
* @throws IllegalArgumentException If limit is not between (including) 0 and 1.
*
* @return Whether the vaccine effectiveness rate is higher than the limit
*/
public boolean isMoreEffectiveThanLimit(double limit) {
...
}
/**
* Updates the sick state of a VaccineTrialVolunteer
*
* @param id The id of the volunteer to set sick.
* @throws IllegalArgumentException if there is no volunteer with the given id
*/
public void setSick(String id) {
...
}
/**
* Get's the volunteer with the given ID
*
* @param id The id of the volunteer to set sick.
*
* @return The vaccine trial volunteer with the given ID. If the ID is not valid
* for any volunteer, return null
*/
public VaccineTrialVolunteer getVolunteer(String id) {
...
}
}
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