exo6/Variable.java

   1 import java.util.TreeMap;
   2 import java.util.Map.Entry;
   3
   4 class Variable extends Terme {
   5     //TODO: TreeMap might look overkill
   6     TreeMap<Integer, Double> v;
   7
   8     Variable() {
   9         v = new TreeMap<Integer, Double>();
  10         fill(-5.0, 5.0, 0.25);
  11     }
  12
  13     /**
  14      * Fill the variable with a discret set of double values
  15      * @param start starting double value
  16      * @param end   ending double value
  17      * @param step  looping step
  18      */
  19     private void fill(double start, double end, double step) {
  20         int i = 0;
  21         for (double d = start; d <= end; d = d + step) {
  22             v.put(i, d);
  23             i++;
  24         }
  25     }
  26
  27     public Entry<Integer, Double> getFirstEntry() {
  28         return v.firstEntry();
  29     }
  30
  31     public Integer size() {
  32         return v.size();
  33     }
  34
  35     public double evaluer() {
  36         return v.pollFirstEntry().getValue();
  37     }
  38 }