A4: Anfang geblockter Heap

src/main/java/xyz/joethei/studium/algodat/praktikum/blatt4/Heap.java

@@ -18,8 +18,10 @@ public class Heap<E extends Comparable<E>> {
     public Heap(Object[] array) {
         this.capacity = array.length + 1;
         this.array = array;
-        this.last = array.length-1;
-        down();
+        this.last = array.length - 1;
+        for (int i = last; i >= 0; i--) {
+            down((E) array[i]);
+        }
     }
 
     public int size() {
@@ -67,6 +69,19 @@ public class Heap<E extends Comparable<E>> {
         }
     }
 
+    private void down(E e) {
+        Object obj = null;
+        int index = -1;
+        //finde E
+        for (int i = 0; i < array.length; i++) {
+            if (array[i] == e) {
+                obj = array[i];
+                index = i;
+            }
+        }
+        
+    }
+
     private void down() {
         int index = 1;
         while (true) {
@@ -83,7 +98,6 @@ public class Heap<E extends Comparable<E>> {
         }
     }
 
-
     private void up() {
         int index = size();
         while (index > 1) {

src/test/java/xyz/joethei/studium/algodat/praktikum/HeapTest.java

@@ -1,18 +1,33 @@
 package xyz.joethei.studium.algodat.praktikum;
 
 import org.junit.jupiter.api.Test;
+import xyz.joethei.studium.algodat.praktikum.blatt4.Heap;
 import xyz.joethei.studium.algodat.praktikum.blatt4.HeapMain;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 class HeapTest {
 
+    private int[] n = new int[]{1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535};
+
     @Test
     void iterativ() {
-        int[] n = new int[]{1, 3, 7, 15, 31, 63, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535};
         int[] res = new int[]{0, 2, 10, 34, 98, 258, 642, 1538, 3586, 8194, 18434, 40962, 90114, 196610, 425986, 917506};
         for (int i = 0; i < 15; i++) {
             assertEquals(HeapMain.getHeap(n[i]).getSwapCount(), res[i]);
         }
     }
+
+    @Test
+    void geblockt() {
+        int[] res = new int[]{};
+        for (int i = 0; i < 15; i++) {
+            Integer[] array = new Integer[i];
+            for (int j = i; j > 0; j--) {
+                array[j-1] = j;
+            }
+            Heap<Integer> heap = new Heap<>(array);
+            assertEquals(heap.getSwapCount(), res[i]);
+        }
+    }
 }