本文整理了Java中java.util.ListIterator.previousIndex()
方法的一些代码示例,展示了ListIterator.previousIndex()
的具体用法。这些代码示例主要来源于Github
/Stackoverflow
/Maven
等平台,是从一些精选项目中提取出来的代码,具有较强的参考意义,能在一定程度帮忙到你。ListIterator.previousIndex()
方法的具体详情如下:
包路径:java.util.ListIterator
类名称:ListIterator
方法名:previousIndex
[英]Returns the index of the element that would be returned by a subsequent call to #previous. (Returns -1 if the list iterator is at the beginning of the list.)
[中]返回后续调用#previous将返回的元素的索引。(如果列表迭代器位于列表的开头,则返回-1。)
代码示例来源:origin: commons-collections/commons-collections
public Object previous() {
lastReturnedIndex = iter.previousIndex();
return iter.previous();
}
代码示例来源:origin: google/guava
/** An implementation of {@link List#indexOf(Object)}. */
static int indexOfImpl(List<?> list, @Nullable Object element) {
if (list instanceof RandomAccess) {
return indexOfRandomAccess(list, element);
} else {
ListIterator<?> listIterator = list.listIterator();
while (listIterator.hasNext()) {
if (Objects.equal(element, listIterator.next())) {
return listIterator.previousIndex();
}
}
return -1;
}
}
代码示例来源:origin: google/j2objc
/** An implementation of {@link List#indexOf(Object)}. */
static int indexOfImpl(List<?> list, @NullableDecl Object element) {
if (list instanceof RandomAccess) {
return indexOfRandomAccess(list, element);
} else {
ListIterator<?> listIterator = list.listIterator();
while (listIterator.hasNext()) {
if (Objects.equal(element, listIterator.next())) {
return listIterator.previousIndex();
}
}
return -1;
}
}
代码示例来源:origin: robovm/robovm
/**
* Searches this list for the specified object and returns the index of the
* first occurrence.
*
* @param object
* the object to search for.
* @return the index of the first occurrence of the object, or -1 if it was
* not found.
*/
public int indexOf(Object object) {
ListIterator<?> it = listIterator();
if (object != null) {
while (it.hasNext()) {
if (object.equals(it.next())) {
return it.previousIndex();
}
}
} else {
while (it.hasNext()) {
if (it.next() == null) {
return it.previousIndex();
}
}
}
return -1;
}
代码示例来源:origin: EngineHub/WorldEdit
/**
* Gets the command that was called, which will include the sub-command
* (i.e. "/br sphere").
*
* @param prefix the command shebang character (such as "/") -- may be empty
* @param spacedSuffix a suffix to put at the end (optional) -- may be null
* @return the command that was used
*/
public String getCommandUsed(String prefix, @Nullable String spacedSuffix) {
checkNotNull(prefix);
StringBuilder builder = new StringBuilder();
if (prefix != null) {
builder.append(prefix);
}
ListIterator<String> li = commandStack.listIterator(commandStack.size());
while (li.hasPrevious()) {
if (li.previousIndex() != commandStack.size() - 1) {
builder.append(" ");
}
builder.append(li.previous());
}
if (spacedSuffix != null) {
if (builder.length() > 0) {
builder.append(" ");
}
builder.append(spacedSuffix);
}
return builder.toString().trim();
}
代码示例来源:origin: neo4j-contrib/neo4j-apoc-procedures
@Test
public void testEmptyList() throws Exception {
ArrayList list = new ArrayList(EMPTY_SET);
assertEquals(0,list.size());
assertEquals(true,list.isEmpty());
assertEquals(false,list.contains(1));
assertEquals(false,list.iterator().hasNext());
ListIterator it = list.listIterator();
assertEquals(false, it.hasNext());
assertEquals(-1, it.previousIndex());
assertEquals(0, it.nextIndex());
}
@Test
代码示例来源:origin: commons-collections/commons-collections
private void walkBackward(ListIterator expected, ListIterator testing) {
while(expected.hasPrevious()) {
assertEquals(expected.nextIndex(),testing.nextIndex());
assertEquals(expected.previousIndex(),testing.previousIndex());
assertTrue(testing.hasPrevious());
assertEquals(expected.previous(),testing.previous());
}
}
代码示例来源:origin: wildfly/wildfly
private SimpleClassTable(IntSerializer indexSerializer, List<Class<?>> classes) {
this.indexSerializer = indexSerializer;
this.classes = classes;
ListIterator<Class<?>> iterator = classes.listIterator();
while (iterator.hasNext()) {
this.indexes.putIfAbsent(iterator.next(), iterator.previousIndex());
}
}
代码示例来源:origin: wildfly/wildfly
public Object previous() {
lastReturnedIndex = iter.previousIndex();
return iter.previous();
}
代码示例来源:origin: neo4j-contrib/neo4j-apoc-procedures
@Test
public void testEmptyList() throws Exception {
SetBackedList list = new SetBackedList(EMPTY_SET);
assertEquals(0,list.size());
assertEquals(true,list.isEmpty());
assertEquals(false,list.contains(1));
assertEquals(false,list.iterator().hasNext());
ListIterator it = list.listIterator();
assertEquals(false, it.hasNext());
assertEquals(-1, it.previousIndex());
assertEquals(0, it.nextIndex());
}
@Test
代码示例来源:origin: commons-collections/commons-collections
/**
* Traverses to the beginning of the given iterator.
*
* @param iter the iterator to traverse
* @param i the starting index
*/
private void backwardTest(ListIterator iter, int i) {
List list = getList();
while (i > 0) {
assertTrue("Iterator should have previous, i:" + i, iter.hasPrevious());
assertEquals("Iterator.nextIndex should work, i:" + i, iter.nextIndex(), i);
assertEquals("Iterator.previousIndex should work, i:" + i, iter.previousIndex(), i - 1);
Object o = iter.previous();
assertEquals("Iterator returned correct element", list.get(i - 1), o);
i--;
}
assertTrue("Iterator shouldn't have previous", !iter.hasPrevious());
int nextIndex = iter.nextIndex();
assertEquals("nextIndex should be 0, actual value: " + nextIndex, nextIndex, 0);
int prevIndex = iter.previousIndex();
assertEquals("previousIndex should be -1, actual value: " + prevIndex, prevIndex, -1);
try {
iter.previous();
fail("Exhausted iterator should raise NoSuchElement");
} catch (NoSuchElementException e) {
// expected
}
}
代码示例来源:origin: stackoverflow.com
public static <T extends Comparable<T>> int findMinIndex(final List<T> xs) {
int minIndex;
if (xs.isEmpty()) {
minIndex = -1;
} else {
final ListIterator<T> itr = xs.listIterator();
T min = itr.next(); // first element as the current minimum
minIndex = itr.previousIndex();
while (itr.hasNext()) {
final T curr = itr.next();
if (curr.compareTo(min) < 0) {
min = curr;
minIndex = itr.previousIndex();
}
}
}
return minIndex;
}
代码示例来源:origin: airbnb/epoxy
public EpoxyModel<?> previous() {
if (iterator.previousIndex() >= start) {
return iterator.previous();
}
throw new NoSuchElementException();
}
代码示例来源:origin: wildfly/wildfly
private ExternalizerObjectTable(IntSerializer indexSerializer, List<Externalizer<Object>> externalizers) {
this.indexSerializer = indexSerializer;
this.externalizers = externalizers;
ListIterator<Externalizer<Object>> iterator = externalizers.listIterator();
while (iterator.hasNext()) {
this.indexes.putIfAbsent(iterator.next().getTargetClass(), iterator.previousIndex());
}
}
代码示例来源:origin: robovm/robovm
public E previous() {
if (iterator.previousIndex() >= start) {
return iterator.previous();
}
throw new NoSuchElementException();
}
代码示例来源:origin: prestodb/presto
/** An implementation of {@link List#indexOf(Object)}. */
static int indexOfImpl(List<?> list, @NullableDecl Object element) {
if (list instanceof RandomAccess) {
return indexOfRandomAccess(list, element);
} else {
ListIterator<?> listIterator = list.listIterator();
while (listIterator.hasNext()) {
if (Objects.equal(element, listIterator.next())) {
return listIterator.previousIndex();
}
}
return -1;
}
}
代码示例来源:origin: org.apache.commons/commons-collections4
/**
* Resets this iterator back to the position at which the iterator
* was created.
*
* @since 3.2
*/
@Override
public void reset() {
if (iterator instanceof ListIterator) {
final ListIterator<?> li = (ListIterator<?>) iterator;
while (li.previousIndex() >= 0) {
li.previous();
}
return;
}
currentIndex = 0;
}
代码示例来源:origin: debezium/debezium
@Override
public String toString() {
ListIterator<Token> iter = tokens.listIterator(tokenIterator.previousIndex());
StringBuilder sb = new StringBuilder();
if (iter.hasNext()) {
sb.append(iter.next());
int count = 1;
while (iter.hasNext()) {
if (count > 20) {
sb.append(" ...");
break;
}
sb.append(" ");
++count;
sb.append(iter.next());
}
}
return sb.toString();
}
代码示例来源:origin: commons-collections/commons-collections
public Object previous() {
checkMod();
lastReturnedIndex = iter.previousIndex();
return iter.previous();
}
代码示例来源:origin: wildfly/wildfly
/** An implementation of {@link List#indexOf(Object)}. */
static int indexOfImpl(List<?> list, @NullableDecl Object element) {
if (list instanceof RandomAccess) {
return indexOfRandomAccess(list, element);
} else {
ListIterator<?> listIterator = list.listIterator();
while (listIterator.hasNext()) {
if (Objects.equal(element, listIterator.next())) {
return listIterator.previousIndex();
}
}
return -1;
}
}
内容来源于网络,如有侵权,请联系作者删除!