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ã«ååšããèŠçŽ ã®åpublic class ArrayDeque<E> extends AbstractCollection<E> implements Deque<E>, Cloneable, Serializable
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ãã®ã¯ã©ã¹ã®iteratorã¡ãœããã«ãã£ãŠè¿ãããã€ãã¬ãŒã¿ã¯ããã§ã€ã«ãã¡ã¹ãã§ããã€ãã¬ãŒã¿ã®äœæåŸã«ãã€ãã¬ãŒã¿èªäœã®removeã¡ãœãã以å€ã®æ¹æ³ã§äž¡ç«¯ãã¥ãŒã倿Žããããšãã€ãã¬ãŒã¿ã¯éåžžConcurrentModificationExceptionãã¹ããŒããŸãã ãã®ããã«ã䞊è¡ããŠå€æŽãè¡ããããšãã€ãã¬ãŒã¿ã¯ãå°æ¥ã®äºæž¬ã§ããªãæç¹ã«ãããŠäºæž¬ã§ããªãåäœãçºçããå±éºãåé¿ããããã«ããã ã¡ã«ãã€æéããäŸå€ãã¹ããŒããŸãã
éåžžãéåæã®äžŠè¡å€æŽãããå Žåã確ããªä¿èšŒãè¡ãããšã¯äžå¯èœãªã®ã§ãã€ãã¬ãŒã¿ã®ãã§ã€ã«ãã¡ã¹ãã®åäœãä¿èšŒããããšã¯ã§ããŸããã ãã§ã€ã«ãã¡ã¹ãã»ã€ãã¬ãŒã¿ã¯ããã¹ãã»ãšãã©ãŒãã»ããŒã¹ã§ConcurrentModificationExceptionãã¹ããŒããŸãã ãããã£ãŠãæ£ç¢ºãæãããã«ãã®äŸå€ã«äŸåããããã°ã©ã ãæžãããšã¯èª€ãã§ããã€ãã¬ãŒã¿ã®ãã§ã€ã«ãã¡ã¹ãã®åäœã¯ãã°ãæ€åºããããã«ã®ã¿äœ¿çšãã¹ãã§ãã
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ãã®ã¯ã©ã¹ã¯ãJava Collections Frameworkã®ã¡ã³ããŒã§ãã
| ã³ã³ã¹ãã©ã¯ã¿ | 説æ |
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ArrayDeque() |
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å䞡端ãã¥ãŒãäœæããŸãã
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ArrayDeque(Collection<? extends E> c) |
æå®ãããã³ã¬ã¯ã·ã§ã³ã®ã€ãã¬ãŒã¿ãè¿ãé åºã§ããã®èŠçŽ ãæ ŒçŽãã䞡端ãã¥ãŒãäœæããŸãã
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ArrayDeque(int numElements) |
æå®ãããæ°ã®èŠçŽ ãä¿æããããã«ååãªåæå®¹éãæã€ã空ã®é
å䞡端ãã¥ãŒãäœæããŸãã
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| 修食åãšå | ã¡ãœãã | 説æ |
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boolean |
add(E e) |
æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã®æ«å°Ÿã«æ¿å
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void |
addFirst(E e) |
æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã®å
é ã«æ¿å
¥ããŸãã
|
void |
addLast(E e) |
æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã®æ«å°Ÿã«æ¿å
¥ããŸãã
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void |
clear() |
ãã¹ãŠã®èŠçŽ ã䞡端ãã¥ãŒããåé€ããŸãã
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ArrayDeque<E> |
clone() |
ãã®äž¡ç«¯ãã¥ãŒã®è€è£œãè¿ããŸãã
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boolean |
contains(Object o) |
æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã«å«ãŸããŠããå Žåã«
trueãè¿ããŸãã |
Iterator<E> |
descendingIterator() |
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E |
element() |
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é ãååŸããŸãããåé€ããŸããã
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E |
getFirst() |
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E |
getLast() |
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boolean |
isEmpty() |
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trueãè¿ããŸãã |
Iterator<E> |
iterator() |
䞡端ãã¥ãŒã®èŠçŽ ã®ã€ãã¬ãŒã¿ãè¿ããŸãã
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boolean |
offer(E e) |
æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã®æ«å°Ÿã«æ¿å
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boolean |
offerFirst(E e) |
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é ã«æ¿å
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boolean |
offerLast(E e) |
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E |
peek() |
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é ãååŸããŸãããåé€ããŸããã䞡端ãã¥ãŒã空ã®å Žåã¯
nullãè¿ããŸãã |
E |
peekFirst() |
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nullãè¿ããŸãã |
E |
peekLast() |
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nullãè¿ããŸãã |
E |
poll() |
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é (ã€ãŸãããã®äž¡ç«¯ãã¥ãŒã®æåã®èŠçŽ )ãååŸããã³åé€ããŸãã䞡端ãã¥ãŒã空ã®å Žåã¯ã
nullãè¿ããŸãã |
E |
pollFirst() |
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nullãè¿ããŸãã |
E |
pollLast() |
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nullãè¿ããŸãã |
E |
pop() |
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void |
push(E e) |
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E |
remove() |
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boolean |
remove(Object o) |
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E |
removeFirst() |
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boolean |
removeFirstOccurrence(Object o) |
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E |
removeLast() |
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boolean |
removeLastOccurrence(Object o) |
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int |
size() |
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Spliterator<E> |
spliterator() |
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SpliteratorãäœæããŸãã |
Object[] |
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toArray(T[] a) |
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addAll, containsAll, removeAll, retainAll, toStringequals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, waitaddAll, containsAll, equals, hashCode, parallelStream, removeAll, removeIf, retainAll, streampublic ArrayDeque()
public ArrayDeque(int numElements)
numElements - 䞡端ãã¥ãŒã®åæå®¹éã®ç¯å²ã®äžépublic ArrayDeque(Collection<? extends E> c)
c - èŠçŽ ã䞡端ãã¥ãŒã«é
眮ãããã³ã¬ã¯ã·ã§ã³NullPointerException - æå®ãããã³ã¬ã¯ã·ã§ã³ãnullã§ããå Žåpublic void addFirst(E e)
addFirstãã€ã³ã¿ãã§ãŒã¹Deque<E>e - 远å ããèŠçŽ NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic void addLast(E e)
ãã®ã¡ãœããã¯ãadd(E)ãšåçã§ãã
addLastãã€ã³ã¿ãã§ãŒã¹Deque<E>e - 远å ããèŠçŽ NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic boolean offerFirst(E e)
offerFirstãã€ã³ã¿ãã§ãŒã¹Deque<E>e - 远å ããèŠçŽ true (Deque.offerFirst(E)ã§æå®ãããŠãããšãã)NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic boolean offerLast(E e)
offerLastãã€ã³ã¿ãã§ãŒã¹Deque<E>e - 远å ããèŠçŽ true (Deque.offerLast(E)ã§æå®ãããŠãããšãã)NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic E removeFirst()
DequepollFirstã¡ãœãããšç°ãªããŸãã removeFirstãã€ã³ã¿ãã§ãŒã¹Deque<E>NoSuchElementException - ãã®äž¡ç«¯ãã¥ãŒã空ã®å Žåpublic E removeLast()
DequepollLastã¡ãœãããšç°ãªããŸãã removeLastãã€ã³ã¿ãã§ãŒã¹Deque<E>NoSuchElementException - ãã®äž¡ç«¯ãã¥ãŒã空ã®å Žåpublic E pollFirst()
Dequenullãè¿ããŸããpublic E pollLast()
Dequenullãè¿ããŸããpublic E getFirst()
DequepeekFirstã¡ãœãããšç°ãªããŸãã getFirstãã€ã³ã¿ãã§ãŒã¹Deque<E>NoSuchElementException - ãã®äž¡ç«¯ãã¥ãŒã空ã®å Žåpublic E getLast()
DequepeekLastã¡ãœãããšç°ãªããŸãã getLastãã€ã³ã¿ãã§ãŒã¹Deque<E>NoSuchElementException - ãã®äž¡ç«¯ãã¥ãŒã空ã®å Žåpublic E peekFirst()
Dequenullãè¿ããŸããpublic E peekLast()
Dequenullãè¿ããŸããpublic boolean removeFirstOccurrence(Object o)
o.equals(e)ãšãªãæåã®èŠçŽ eãååšããå Žåã¯ããã®èŠçŽ ãåé€ããŸãã æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã«å«ãŸããŠããå Žå(ããªãã¡ãåŒåºãã®çµæãšããŠãã®äž¡ç«¯ãã¥ãŒã倿Žãããå Žå)ã¯trueãè¿ããŸãã removeFirstOccurrenceãã€ã³ã¿ãã§ãŒã¹Deque<E>o - ãã®äž¡ç«¯ãã¥ãŒããåé€ãããèŠçŽ (ãã®èŠçŽ ãååšããå Žå)truepublic boolean removeLastOccurrence(Object o)
o.equals(e)ãšãªãæåŸã®èŠçŽ eãååšããå Žåã¯ããã®èŠçŽ ãåé€ããŸãã æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã«å«ãŸããŠããå Žå(ããªãã¡ãåŒåºãã®çµæãšããŠãã®äž¡ç«¯ãã¥ãŒã倿Žãããå Žå)ã¯trueãè¿ããŸãã removeLastOccurrenceãã€ã³ã¿ãã§ãŒã¹Deque<E>o - ãã®äž¡ç«¯ãã¥ãŒããåé€ãããèŠçŽ (ãã®èŠçŽ ãååšããå Žå)truepublic boolean add(E e)
ãã®ã¡ãœããã¯ãaddLast(E)ãšåçã§ãã
addãã€ã³ã¿ãã§ãŒã¹Collection<E>addãã€ã³ã¿ãã§ãŒã¹Deque<E>addãã€ã³ã¿ãã§ãŒã¹Queue<E>addãã¯ã©ã¹AbstractCollection<E>e - 远å ããèŠçŽ true (Collection.add(E)ã§æå®ãããŠãããšãã)NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic boolean offer(E e)
ãã®ã¡ãœããã¯ãofferLast(E)ãšåçã§ãã
offerãã€ã³ã¿ãã§ãŒã¹Deque<E>offerãã€ã³ã¿ãã§ãŒã¹Queue<E>e - 远å ããèŠçŽ true (Queue.offer(E)ã§æå®ãããŠãããšãã)NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic E remove()
pollã¡ãœãããšç°ãªããŸãã
ãã®ã¡ãœããã¯ãremoveFirst()ãšåçã§ãã
public E poll()
nullãè¿ããŸãã
ãã®ã¡ãœããã¯ãpollFirst()ãšåçã§ãã
public E element()
peekã¡ãœãããšç°ãªããŸãã
ãã®ã¡ãœããã¯ãgetFirst()ãšåçã§ãã
public E peek()
nullãè¿ããŸãã
ãã®ã¡ãœããã¯ãpeekFirst()ãšåçã§ãã
public void push(E e)
ãã®ã¡ãœããã¯ãaddFirst(E)ãšåçã§ãã
pushãã€ã³ã¿ãã§ãŒã¹Deque<E>e - ããã·ã¥ããèŠçŽ NullPointerException - æå®ãããèŠçŽ ãnullã§ããå Žåpublic E pop()
ãã®ã¡ãœããã¯ãremoveFirst()ãšåçã§ãã
popãã€ã³ã¿ãã§ãŒã¹Deque<E>NoSuchElementException - ãã®äž¡ç«¯ãã¥ãŒã空ã®å Žåpublic int size()
sizeãã€ã³ã¿ãã§ãŒã¹Collection<E>sizeãã€ã³ã¿ãã§ãŒã¹Deque<E>sizeãã¯ã©ã¹AbstractCollection<E>public boolean isEmpty()
trueãè¿ããŸããisEmptyãã€ã³ã¿ãã§ãŒã¹Collection<E>isEmptyãã¯ã©ã¹AbstractCollection<E>truepublic Iterator<E> iterator()
remove()ã®é£ç¶ããåŒåºãã«ãã£ãŠãã¥ãŒããåãåºãããé åºããŸãã¯pop()ã®é£ç¶ããåŒåºãã«ãã£ãŠããããããé åºãšåãã§ãã public Iterator<E> descendingIterator()
DequedescendingIteratorãã€ã³ã¿ãã§ãŒã¹Deque<E>public boolean contains(Object o)
trueãè¿ããŸãã ã€ãŸãããã®äž¡ç«¯ãã¥ãŒã«ão.equals(e)ãšãªãèŠçŽ eã1ã€ä»¥äžå«ãŸããŠããå Žåã«ã ãtrueãè¿ããŸãã containsãã€ã³ã¿ãã§ãŒã¹Collection<E>containsãã€ã³ã¿ãã§ãŒã¹Deque<E>containsãã¯ã©ã¹AbstractCollection<E>o - ãã®äž¡ç«¯ãã¥ãŒã«å«ãŸããŠãããã©ããã調ã¹ããªããžã§ã¯ãtruepublic boolean remove(Object o)
o.equals(e)ãšãªãæåã®èŠçŽ eãååšããå Žåã¯ããã®èŠçŽ ãåé€ããŸãã æå®ãããèŠçŽ ããã®äž¡ç«¯ãã¥ãŒã«å«ãŸããŠããå Žå(ããªãã¡ãåŒåºãã®çµæãšããŠãã®äž¡ç«¯ãã¥ãŒã倿Žãããå Žå)ã¯trueãè¿ããŸãã
ãã®ã¡ãœããã¯ãremoveFirstOccurrence(Object)ãšåçã§ãã
removeãã€ã³ã¿ãã§ãŒã¹Collection<E>removeãã€ã³ã¿ãã§ãŒã¹Deque<E>removeãã¯ã©ã¹AbstractCollection<E>o - ãã®äž¡ç«¯ãã¥ãŒããåé€ãããèŠçŽ (ãã®èŠçŽ ãååšããå Žå)truepublic void clear()
clearãã€ã³ã¿ãã§ãŒã¹Collection<E>clearãã¯ã©ã¹AbstractCollection<E>public Object[] toArray()
è¿ãããé åãžã®åç §ã䞡端ãã¥ãŒãç¶æããªããšããç¹ã§ããã®é åã¯å®å šã§ãã (ã€ãŸãããã®ã¡ãœããã¯æ°ããé åãå²ãåœãŠãŸã)ã ãã®ãããåŒåºãåŽã¯ãè¿ãããé åãèªç±ã«å€æŽã§ããŸãã
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toArrayãã€ã³ã¿ãã§ãŒã¹Collection<E>toArrayãã¯ã©ã¹AbstractCollection<E>public <T> T[] toArray(T[] a)
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