1 files changed, 82 insertions, 0 deletions
diff --git a/ap-computer-science-a-exam/QuestionOne.java b/ap-computer-science-a-exam/QuestionOne.java
new file mode 100644
index 0000000..3b61fab
--- /dev/null
+++ b/ap-computer-science-a-exam/QuestionOne.java
@@ -0,0 +1,82 @@
+import java.util.ArrayList;
+
+class Trial {
+    private int trialNum;
+    private double temperature;
+    private String compoundName;
+    private double amountUsed;
+    public Trial(int num, double temp, String compound, double amt){
+        trialNum = num;
+        temperature = temp;
+        compoundName = compound;
+        amountUsed = amt;
+    }
+    public int getTrialNum(){ return trialNum; }
+    public double getTemp(){ return temperature; }
+    public String getCompound(){ return compoundName; }
+    public double getAmtUsed(){ return amountUsed; }
+}
+
+class ScienceExperiment {
+    private ArrayList<Trial> trialList;
+    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;
+    }
+    public ArrayList<String> getCompoundList(){
+        ArrayList<String> out = new ArrayList<String>();
+        for (Trial trial : trialList){
+            if (!out.contains(trial.getCompound()))
+                out.add(trial.getCompound());
+        }
+        return out;
+    }
+    public String getCompoundWithHighestAvg(){
+        double max = -1; // less than all non-negative temperatures.
+        String compound = ""; // to make java behave
+        for (String curCompound : getCompoundList()){
+            double avg = getCompoundAvg(curCompound);
+            if (avg > max){
+                max = avg;
+                compound = curCompound;
+            }
+        }
+        return compound;
+    }
+    public void add(Trial trial){
+        trialList.add(trial);
+    }
+    public ScienceExperiment(){
+        trialList = new ArrayList<Trial>();
+    }
+    public double getCompoundAmountUsed(String compound){
+        double sum = 0;
+        for (Trial trial : trialList){
+            if (trial.getCompound() == compound)
+                sum += trial.getAmtUsed();
+        }
+        return sum;
+    }
+}
+
+public class QuestionOne {
+    public static void main(String[] args){
+        ScienceExperiment exp = new ScienceExperiment();
+        exp.add(new Trial(1,70,"alkynes",1));
+        exp.add(new Trial(27,100,"ketones",15));
+        exp.add(new Trial(29,80,"ketones",2));
+        exp.add(new Trial(35,90,"ethers",3));
+        System.out.println(exp.getCompoundAvg("alkynes"));
+        System.out.println(exp.getCompoundAvg("ketones"));
+        System.out.println(exp.getCompoundAvg("thiol"));
+        System.out.println(exp.getCompoundAmountUsed("ketones"));
+        System.out.println(exp.getCompoundWithHighestAvg());
+    }
+}