Chapter 04 completed.

Author: liuyubobobo

04-Sort-Visualization/11-Heap-Sort-Visualization/src/AlgoVisualizer.java

@@ -27,10 +27,12 @@ public void run(){
 
         setData(data.N());
 
+        // 建堆
         for( int i = (data.N()-1-1)/2 ; i >= 0 ; i -- ){
             shiftDown(data.N(), i);
         }
 
+        // 堆排序
         for( int i = data.N()-1; i > 0 ; i-- ){
             data.swap(0, i);
             shiftDown(i, 0);

04-Sort-Visualization/11-Heap-Sort-Visualization/src/HeapSortData.java

@@ -1,8 +1,7 @@
-import java.util.Arrays;
 
 public class HeapSortData {
 
-    public int[] numbers;
+    private int[] numbers;
     public int heapIndex;   // numbers[heapIndex...N) 已经排好序
 
     public HeapSortData(int N, int randomBound){