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java Programming Glossary: iteratorsWhat is an efficient algorithm to find whether a singly linked list is circular/cyclic or not? http://stackoverflow.com/questions/1103522/what-is-an-efficient-algorithm-to-find-whether-a-singly-linked-list-is-circular improve this question The standard answer is to take two iterators at the beginning increment the first one once and the second.. l Iterator i l.begin j l.begin while true increment the iterators if either is at the end you're done no circle if i.hasNext i.. false this should be whatever test shows that the two iterators are pointing at the same place if i.getObject j.getObject return..
Inner class in interface vs in class http://stackoverflow.com/questions/1845731/inner-class-in-interface-vs-in-class static inner classes. They have valid uses for example iterators are often implemented as non static inner classes within the..
Which is more efficient, a for-each loop, or an iterator? http://stackoverflow.com/questions/2113216/which-is-more-efficient-a-for-each-loop-or-an-iterator linked list is an example of such a data structure. All iterators have as a fundamental requirement that next should be an O 1..
Is there a Java Map keySet() equivalent for C++'s std::map? http://stackoverflow.com/questions/2467000/is-there-a-java-map-keyset-equivalent-for-cs-stdmap utility functions you can convert any range of std map iterators or iterators into any other pair associative container you may.. you can convert any range of std map iterators or iterators into any other pair associative container you may have into.. containing the keys you can easily create one using these iterators std set int s begin_keys m end_keys m Overall it's a more flexible..
What are major differences between C# and Java? http://stackoverflow.com/questions/295224/what-are-major-differences-between-c-sharp-and-java doesn't have iterator blocks for simple implemetation of iterators Java doesn't have anything like LINQ Partly due to not having..
When to use LinkedList<> over ArrayList<>? http://stackoverflow.com/questions/322715/when-to-use-linkedlist-over-arraylist E allows for constant time insertions or removals using iterators but only sequential access of elements. In other words you can.. of using a LinkedList arise when you re use existing iterators to insert and remove elements. These operations can then be..
Is iterating ConcurrentHashMap values thread safe? http://stackoverflow.com/questions/3768554/is-iterating-concurrenthashmap-values-thread-safe They do not throw ConcurrentModificationException. However iterators are designed to be used by only one thread at a time. What does..
Why should I use foreach instead of for (int i=0; i<length; i++) in loops? http://stackoverflow.com/questions/4383250/why-should-i-use-foreach-instead-of-for-int-i-0-ilength-i-in-loops
Combine multiple Collections into a single logical Collection? http://stackoverflow.com/questions/4896662/combine-multiple-collections-into-a-single-logical-collection collections and I wonder how I could use guava iterables iterators to generate a logical view on the internal collections without.. the elements of each iterable in inputs. The input iterators are not polled until necessary. The returned iterable's iterator..
Iterators in C++ (stl) vs Java, is there a conceptual difference? http://stackoverflow.com/questions/56347/iterators-in-c-stl-vs-java-is-there-a-conceptual-difference iter.next In the C standard template library iterators seem to represent a datatype or class the supports the operator.. item. The limit has to checked by the user comparing two iterators in the normal case the second iterator is the container end... conceptual difference. C utilizes different classes of iterators. Some are used for random access unlike Java some are used for..
How to Iterate Through an Array List (ArrayIndexOutOfBoundsException) http://stackoverflow.com/questions/6700717/how-to-iterate-through-an-array-list-arrayindexoutofboundsexception iterator twice in each iteration you're getting new iterators all the time. The easiest way to write this loop is using the..
java.util.ConcurrentModificationException http://stackoverflow.com/questions/8189466/java-util-concurrentmodificationexception question Here's why As it is says in the Javadoc The iterators returned by this class's iterator and listIterator methods are..
Why is Java's Iterator not an Iterable? http://stackoverflow.com/questions/839178/why-is-javas-iterator-not-an-iterable would be convenient to be able to use a for each loop with iterators like this for Object o someContainer.listSomeObjects .... where..
Java: adding elements to a collection during iteration http://stackoverflow.com/questions/993025/java-adding-elements-to-a-collection-during-iteration is in progress. So if I can't do what I want to do using iterators what do you suggest I do java iterator share improve this..
How does ConcurrentHashMap work internally? http://stackoverflow.com/questions/11793067/how-does-concurrenthashmap-work-internally for thread safety instead of synchronized. Has thread safe Iterators. synchronizedCollection's iterators are not thread safe. Does..
Do we ever need to use Iterators on ArrayList? http://stackoverflow.com/questions/15827703/do-we-ever-need-to-use-iterators-on-arraylist we ever need to use Iterators on ArrayList Yesterday when I was answering to question getting.. Can you please explain Question Do we ever need to use Iterators on ArrayList UPD This is about explicitly using Iterator. java..
What are the Advantages of Enhanced for loop and Iterator in Java? http://stackoverflow.com/questions/3328672/what-are-the-advantages-of-enhanced-for-loop-and-iterator-in-java to me what are the advantages of Enhanced for loop and Iterators in java 5 java foreach share improve this question The..
Is iterating ConcurrentHashMap values thread safe? http://stackoverflow.com/questions/3768554/is-iterating-concurrenthashmap-values-thread-safe insertion or removal of only some entries. Similarly Iterators and Enumerations return elements reflecting the state of the..
Iterators in C++ (stl) vs Java, is there a conceptual difference? http://stackoverflow.com/questions/56347/iterators-in-c-stl-vs-java-is-there-a-conceptual-difference in C stl vs Java is there a conceptual difference I'm returning..
What are the benefits of the Iterator interface in Java? http://stackoverflow.com/questions/89891/what-are-the-benefits-of-the-iterator-interface-in-java data structures in linked lists. From what I understand Iterators are a way of traversing through the items in a data structure.. place of Enumeration in the Java collections framework. Iterators differ from enumerations in two ways Iterators allow the caller.. framework. Iterators differ from enumerations in two ways Iterators allow the caller to remove elements from the underlying collection..
Difference between Java Enumeration and Iterator http://stackoverflow.com/questions/948194/difference-between-java-enumeration-and-iterator is an explanation of the differences between Enumeration Iterators differ from enumerations in two ways Iterators allow the caller.. Enumeration Iterators differ from enumerations in two ways Iterators allow the caller to remove elements from the underlying collection..
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