Java Reference
In-Depth Information
Figure 22
Using Heapsort to Sort an Array
753
754
ch16/heapsort/HeapSorter.java
1 /**
2
This class applies the heapsort algorithm to sort an array.
3 */
4
public class
HeapSorter
5 {
6 /**
7
Constructs a heap sorter that sorts a given array.
8 @param anArray
an array of integers
9 */
10
public
HeapSorter(
int
[] anArray)
11 {
12 a = anArray;
13 }
14
15 /**
16
Sorts the array managed by this heap sorter.
17 */
18
public void
sort()
19 {
20
int
n = a.length -
1
;
21
for
(
int
i = (n -
1
) /
2
; i >=
0
; i--)
22 fixHeap(i, n);
23
while
(n >
0
)
24 {
25 swap(
0
, n);
26 n--;
