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root/jsr166/jsr166/src/main/java/util/PriorityQueue.java

Comparing jsr166/src/main/java/util/PriorityQueue.java (file contents):
Revision 1.26 by tim, Fri Aug 8 20:05:07 2003 UTC vs.
Revision 1.29 by dl, Sun Aug 24 23:31:53 2003 UTC

#	Line 28 | Line 28
28		* elements are added to a priority queue, its capacity grows
29		* automatically.  The details of the growth policy are not specified.
30		*
31	+	* <p>The Iterator provided in method {@link #iterator()} is <em>not</em>
32	+	* guaranteed to traverse the elements of the PriorityQueue in any
33	+	* particular order. If you need ordered traversal, consider using
34	+	* <tt>Arrays.sort(pq.toArray())</tt>.
35	+	*
36	+	* <p> <strong>Note that this implementation is not synchronized.</strong>
37	+	* Multiple threads should not access a <tt>PriorityQueue</tt>
38	+	* instance concurrently if any of the threads modifies the list
39	+	* structurally. Instead, use the thread-safe {@link
40	+	* java.util.concurrent.BlockingPriorityQueue} class.
41	+	*
42	+	*
43		* <p>Implementation note: this implementation provides O(log(n)) time
44		* for the insertion methods (<tt>offer</tt>, <tt>poll</tt>,
45		* <tt>remove()</tt> and <tt>add</tt>) methods; linear time for the
#	Line 176 | Line 188 | public class PriorityQueue<E> extends Ab
188		*/
189		public PriorityQueue(Collection<? extends E> c) {
190		initializeArray(c);
191	<	if (c instanceof SortedSet<? extends E>) {
192	<	SortedSet<? extends E> s = (SortedSet<? extends E>) c;
191	>	if (c instanceof SortedSet) {
192	>	// @fixme double-cast workaround for compiler
193	>	SortedSet<? extends E> s = (SortedSet<? extends E>) (SortedSet)c;
194		comparator = (Comparator<? super E>)s.comparator();
195		fillFromSorted(s);
196	<	} else if (c instanceof PriorityQueue<? extends E>) {
196	>	} else if (c instanceof PriorityQueue) {
197		PriorityQueue<? extends E> s = (PriorityQueue<? extends E>) c;
198		comparator = (Comparator<? super E>)s.comparator();
199		fillFromSorted(s);

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