本文整理汇总了Java中java.util.ArrayDeque.descendingIterator方法的典型用法代码示例。如果您正苦于以下问题：Java ArrayDeque.descendingIterator方法的具体用法？Java ArrayDeque.descendingIterator怎么用？Java ArrayDeque.descendingIterator使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类java.util.ArrayDeque的用法示例。
在下文中一共展示了ArrayDeque.descendingIterator方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: testDescendingIterator
import java.util.ArrayDeque; //导入方法依赖的package包/类
/**
* Descending iterator iterates through all elements
*/
public void testDescendingIterator() {
ArrayDeque q = populatedDeque(SIZE);
int i = 0;
Iterator it = q.descendingIterator();
while (it.hasNext()) {
assertTrue(q.contains(it.next()));
++i;
}
assertEquals(i, SIZE);
assertFalse(it.hasNext());
try {
it.next();
shouldThrow();
} catch (NoSuchElementException success) {}
}
示例2: testDescendingIteratorOrdering
import java.util.ArrayDeque; //导入方法依赖的package包/类
/**
* Descending iterator ordering is reverse FIFO
*/
public void testDescendingIteratorOrdering() {
final ArrayDeque q = new ArrayDeque();
for (int iters = 0; iters < 100; ++iters) {
q.add(new Integer(3));
q.add(new Integer(2));
q.add(new Integer(1));
int k = 0;
for (Iterator it = q.descendingIterator(); it.hasNext();) {
assertEquals(++k, it.next());
}
assertEquals(3, k);
q.remove();
q.remove();
q.remove();
}
}
示例3: testDescendingIteratorRemove
import java.util.ArrayDeque; //导入方法依赖的package包/类
/**
* descendingIterator.remove() removes current element
*/
public void testDescendingIteratorRemove() {
final ArrayDeque q = new ArrayDeque();
final Random rng = new Random();
for (int iters = 0; iters < 100; ++iters) {
int max = rng.nextInt(5) + 2;
int split = rng.nextInt(max - 1) + 1;
for (int j = max; j >= 1; --j)
q.add(new Integer(j));
Iterator it = q.descendingIterator();
for (int j = 1; j <= split; ++j)
assertEquals(it.next(), new Integer(j));
it.remove();
assertEquals(it.next(), new Integer(split + 1));
for (int j = 1; j <= split; ++j)
q.remove(new Integer(j));
it = q.descendingIterator();
for (int j = split + 1; j <= max; ++j) {
assertEquals(it.next(), new Integer(j));
it.remove();
}
assertFalse(it.hasNext());
assertTrue(q.isEmpty());
}
}