java list remove duplicates

Java Collection of dry goods-inventory list source code analysis, dry goods inventory listPreface In the previous article, we analyzed ArrayList in detail. Today we will talk about 'arraylist. What is the difference between them? The biggest difference is that the underlying data structure is implemented differently. ArrayList is implemented by arrays (see the previous article), and LinedList is implemented

listIterator(); } public abstract ListIterator listIterator(int index);} This class uses a large number of Iterator for sequential traversal of sets. Because it cannot be randomly located, this class focuses on sequential traversal. If you want to implement a list set by yourself, it is best to inherit this abstract class, in this way, you don't have to bother yourself to implement so many methods.

remove (Object key): Delete the element associated with keyvoid Putall (Map t): Adds all elements from a specific image to the imagevoid Clear (): Remove all mappings from the image2 Query operation:Object get (Object key): Gets the value associated with the keyword key. The key object in the Map collection does not allow duplicates, which means that any two key

Java integration List, Map and Set difference, javamap Java integration List, Map and Set differences 1. The parent interfaces of List and Set are Collection, while Map is not 2. The elements in the List are ordered and can be r

;Header = Next;if (next = = null) {tail = null;}else{Next.prev = null;}size--;}Removing the tail node of a linear listpublic void RemoveTail () {Node last = tail;if (last = = null)throw new Nosuchelementexception ("This node does not exist");Unlinklast (last);}Delete Tail nodepublic void Unlinklast (node node) {Node pre = Node.prev;Node.data = null;Node.prev = null;tail = pre;if (pre = = null) {Header = null;}else{Pre.next = null;}size--;}Remove any o

", "My_topic_name", "--replication-factor", "3", "--config", "X=y" }; Topiccommand.main (options); 2. View all Topics"Command mode": bin/kafka-topics.sh--list--zookeeper localhost:2181"JAVA API Mode": string[] options = new string[]{ "--list", "--zookeeper", "localhost:2181" }; Topiccommand.main (options); 3. View

in the list, except for the head node.n = n% count;//number of bits actually to be placed //Prepare to start the shift againi =0; p = head; } }//Find the first node to be swapped for a precursor //q is the precursor of the first node to be exchanged while(P! =NULL) {p = p.next; Q = q.next; } p = q; Q = root;if(P! =NULL P.next! =NULL) {//have a node to shiftListNode node; while(P.next! =NUL

); Head.right = root; TreeNode node = head; while(Node.right! =NULL) {node = node.right;if(Node.left! =NULL) {TreeNode end = Node.left; while(End.right! =NULL) {end = End.right; } TreeNode tmp = Node.right; Node.right = Node.left; Node.left =NULL; End.right = tmp; }} head.right =NULL;//Remove references for easy garbage collection}}Assessment Results　　Click on the picture, the mouse does not release, dra

collectionObject remove (Object key): Delete the element associated with keyvoid Putall (Map t): Adds all elements from a specific image to the imagevoid Clear (): Remove all mappings from the image2 Query operation:Object get (Object key): Gets the value associated with the keyword key. The key object in the Map collection does not allow duplicates, which means

From: http://blog.sina.com.cn/s/blog_4914a33b0100xtyj.html // When removing a message,The size of arraylist has changed (that is, list. Size () has changed );When I is greater than or equal to list. Size (), the loop jumps out, And the arraylist can no longer be executed;So you must execute I --, that is, I = I-1;Now we can traverse all the information in the list