lab03: Completed adventure

lab03/src/adventure/BeeCountingStage.java

@@ -3,6 +3,7 @@
 import edu.princeton.cs.algs4.In;
 import edu.princeton.cs.algs4.StdRandom;
 
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
@@ -11,7 +12,7 @@ public class BeeCountingStage implements AdventureStage {
 
     private final In in;
     private final Map<String, AdventureStage> responses;
-    private List<String> input;
+    private final List<String> input = new ArrayList<>();
 
     public BeeCountingStage(In in) {
         this.in = in;
@@ -83,7 +84,7 @@ public Map<String, AdventureStage> getResponses() {
      */
     private int sumInput() {
         int sum = 0;
-        for (int i = 0; i <= this.input.size(); i++) {
+        for (int i = 0; i <= this.input.size() - 1; i++) {
             sum += Integer.parseInt(this.input.get(i));
         }
         return sum;

lab03/src/adventure/PalindromeStage.java

@@ -64,7 +64,7 @@ public Map<String, AdventureStage> getResponses() {
     /** Returns a new IntList with the contents of the original IntList in reverse order.*/
     private static IntList reverseList(IntList l) {
         IntList reversed = null;
-        while (l.rest != null) {
+        while (l != null) {
             reversed = new IntList(l.first, reversed);
             l = l.rest;
         }
@@ -77,8 +77,8 @@ private static IntList reverseList(IntList l) {
      */
     private static IntList digitsToIntList(String s) {
         int[] a = new int[s.length()];
-        for (int i = s.length(); i > 0; i++) {
-            a[s.length() - i] = Character.getNumericValue(s.charAt(i));
+        for (int i = 0; i < s.length(); i++) {
+            a[i] = Character.getNumericValue(s.charAt(i));
         }
         return IntList.of(a);
     }

lab03/src/adventure/SpeciesListStage.java

@@ -101,6 +101,7 @@ public static int arraySimilarity(List<String> listOne, List<String> listTwo) {
                 copy.remove(o);
             }
         }
-        return similarObjects / listOne.size();
+        if (similarObjects == listOne.size()) return 1;
+        return 0;
     }
 }