fibby fib fib

src/main/java/io/zipcoder/Problem2.java

@@ -1,4 +1,67 @@
 package io.zipcoder;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class Problem2 {
+
+
+    public String fibIteration(int input) {
+
+        String toReturn = "";
+
+        ArrayList<Integer> fibAnswer = new ArrayList<Integer>();
+        fibAnswer.add(0);
+        fibAnswer.add(1);
+
+        for (int i = 1; i < input; i++) {
+            if ((fibAnswer.get(fibAnswer.size() - 2) + fibAnswer.get(fibAnswer.size() - 1)) > input) {
+                break;
+            }
+
+            int numberToAdd = (fibAnswer.get(fibAnswer.size() - 2) + fibAnswer.get(fibAnswer.size() - 1));
+            fibAnswer.add(numberToAdd);
+            i = numberToAdd;
+        }
+
+        for (int i = 0; i < fibAnswer.size(); i++) {
+            toReturn += fibAnswer.get(i);
+            if (i < fibAnswer.size() - 1) {
+                toReturn += ", ";
+            }
+        }
+
+        return toReturn;
+    }
+
+
+    public String fibRecursion(int input, List<Integer> fibList) {
+
+        if (fibList.size() == 0) {
+            fibList.add(0);
+            fibList.add(1);
+        }
+
+        int numberToAdd = (fibList.get(fibList.size() - 2) + fibList.get(fibList.size() - 1));
+
+
+        if (numberToAdd > input) {
+            String toReturn = "";
+            for (int i = 0; i < fibList.size(); i++) {
+                toReturn += fibList.get(i);
+                if (i < fibList.size() - 1) {
+                    toReturn += ", ";
+                }
+            }
+            return toReturn;
+
+        } else {
+            fibList.add(numberToAdd);
+            return fibRecursion(input, fibList);
+
+
+        }
+    }
+
+
 }

src/test/java/io/zipcoder/Problem2Test.java

@@ -1,4 +1,35 @@
 package io.zipcoder;
 
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.util.ArrayList;
+
 public class Problem2Test {
+
+    private Problem2 tester;
+
+    @Before
+    public void setup() {
+        tester = new Problem2();
+    }
+
+    @Test
+    public void fibIterationTest1() {
+        int input = 150;
+        String expected = "0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144";
+        String actual = tester.fibIteration(input);
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void fibRecursionTest1() {
+        int input = 150;
+        ArrayList<Integer> testList = new ArrayList<Integer>();
+        String expected = "0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144";
+        String actual = tester.fibRecursion(input, testList);
+        Assert.assertEquals(expected, actual);
+    }
+
 }