List-iterator does not support the set operation. UnsupportedOperationException - if the specified list's Mutually comparable (for example, strings and integers). Throws: ClassCastException - if the list contains elements that are not Parameters: list - the list to be sorted. N 2 log(n) performance that would result from attempting The array, and iterates over the list resetting each elementįrom the corresponding position in the array. This implementation dumps the specified list into an array, sorts Sorting and Information Theoretic Complexity", in Proceedings of theįourth Annual ACM-SIAM Symposium on Discrete Algorithms, pp 467-474, It uses techiques from Peter McIlroy's "Optimistic The implementation was adapted from Tim Peters's list sort for Python Simply concatenate the arrays and sort the resulting array. It is well-suited to merging two or more sorted arrays: The implementation takes equal advantage of ascending andĭescending order in its input array, and can take advantage ofĪscending and descending order in different parts of the same Input arrays to n/2 object references for randomly ordered input Storage requirements vary from a small constant for nearly sorted Implementation requires approximately n comparisons. Performance of a traditional mergesort when the input array is When the input array is partially sorted, while offering the Iterative mergesort that requires far fewer than n lg(n) comparisons Implementation note: This implementation is a stable, adaptive, The specified list must be modifiable, but need not be resizable. Not be reordered as a result of the sort. This sort is guaranteed to be stable: equal elements will Must not throw a ClassCastException for any elements Mutually comparable (that is, e1.compareTo(e2) Furthermore, all elements in the list must be Sorts the specified list into ascending order, according to theĪll elements in the list must implement the Comparable ForĮxample, invoking the sort method on an unmodifiable list that isĪlready sorted may or may not throw UnsupportedOperationException. These algorithms may, but are not required to, throw thisĮxception if an invocation would have no effect on the collection. Support the appropriate mutation primitive(s), such as the set To throw UnsupportedOperationException if the collection does not The "destructive" algorithms contained in this class, that is, theĪlgorithms that modify the collection on which they operate, are specified (For example, the algorithm used by sort does not have to beĪ mergesort, but it does have to be stable.) Substitute other algorithms, so long as the specification itself is adhered Suchĭescriptions should be regarded as implementation notes, rather than Generally includes a brief description of the implementation. The documentation for the polymorphic algorithms contained in this class If the collections or class objects provided to them are null. The methods of this class all throw a NullPointerException Specified collection, and a few other odds and ends. It contains polymorphic algorithms that operate onĬollections, "wrappers", which return a new collection backed by a Both Key and value are objects, duplicates key is not allowed but values can be duplicated.This class consists exclusively of static methods that operate on or returnĬollections. It ensures that the values are maintained in ascending order based on the keys. SortedMap Interface: The SortedMap interface extends Map interface. HashMap, LinkedHashMap, TreeMap, Hashtable are the implementation classes of Map interface. A key is an object that you use to retrieve a value at a later code. Map Interface: The Map interface maps a unique key to values. This interface declares the behavior of a set sorted in ascending order. SortedSet Interface: The SortedSet interface is the child interface of Set interface. HashSet, LinkedHashSet, and TreeSetis the implementation classes of the Set interface. In Set interface insertion order are not preserved. It extends the Collection interface and declares the behavior of a collection that does not allow duplicate elements. Set Interface: The Set interface defines a set. Deque enables us to perform the operations at both ends. In Deque we can insert and delete the elements from both the side. It extends the Queue interface and declares the behavior of a double-ended queue. If we want to represent a group of individual objects prior to processing then we should go for the Queue interface.ĭeque Interface: The Deque interface was added by Java SE6. Queue Interface: The Queue interface extends Collection and declares the behavior of queue, which is often a first-in, first-out order. ArrayList, LinkedList, Vector, Stack is the implementation classes of List interface. In List interface insertion order must be preserved. The List interface extends the collection interface.
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