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WY5V8181
HR
(a)
public double getCompoundAvg(String comp){
int ct = 0;
double totalTemp = 0;
for (Trial trial : trialList){
if (trial.getCompound() != comp) continue;
ct++;
totalTemp += trial.getTemp();
}
if (ct > 0) return totalTemp/ct;
else return -1;
}
(b)
public String getCompoundWithHighestAvg(){
double max = -1; // less than all non-negative temperatures.
String compound;
for (String curCompound : getCompoundList()){
double avg = getCompoundAvg(curCompound);
if (avg > max){
max = avg;
compound = curCompound;
}
}
return compound;
}
(c)
The programmer would need to add the amount of compound used as a
private instance variable (with a getter) in Trial (which would be
initialized in its constructor). ScienceExperiment would hold the method
`public double getCompoundAmountUsed(String compoundName)` which would
sum, for all Trials in trialList with the same compoundName as given,
the value of trial.getAmountUsed(), and return that value.
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