data structures and abstractions with java

From here, we will be explaining the Java data structure, is it ready? Let ' s go~~The data structure model in Java can be divided into several parts:1. Linear structure2. Tree-shaped structure3. Graphic or mesh structureIn the next few, we will explain these data

has a specific value, and once found, you can display, delete, or otherwise manipulate the node. The new node can be inserted in front of or behind a node of a particular value, first to traverse to find the node. The double-ended list maintains a reference to the last node in the list, which is usually the same as the header, called Tailer. Double-ended lists allow data items to be inserted at the end of a table. An abstract

Queues are FIFO.Implementing the queue code using the Java language:/* Queue */public class Queue {private int maxSize; Maximum Queue private long[] Quearray; Queue array private int front; Team head private int rear; Team tail private int nitems; Number of current queue elements//constructor public queue (int s) {super (); this.maxsize = S;this.quearray = new Long[maxsize];this.front = 0;this.rear = -1;t

Vector implements a dynamic array. is an array of objects that can be automatically grown.Comparison of vectors and ArrayList:1, all in an array format to store data, index data block insert data slow2, ArrayList will be faster than vector, he is non-synchronous3, involving multi-threading, vector is a better synchronizationUsage:1. Constructor:1) Construction me

Array Advantages: Fast query, if you know the index can quickly access the disadvantage: Delete slow, size fixed ordered array advantages: Faster than unordered array lookup disadvantage: Delete and insert slow, size fixed stack advantages: Provide last-in-first-out access method disadvantage: Access to other items is slow queue advantages: Provide first-in-out access method disadvantage: access to other The items are slow. List Advantages: Quick Insert, delete fast disadvantage: find slow (each

} + } - //complement the left and right sub-tree nodes of the two-fork tree the for(intj = 0; J ){ *Btn[j].setleftnode (btn[2*j + 1]); $Btn[j].setrightnode (Btn[2*j + 2]);Panax Notoginseng } - } the //Recursive method pre-order traversal + voidPreorder (Binarytreenode btn) { ABinarytreenode root =btn; the if(Root! =NULL){ + Printnode (root); - inorder (root.leftnode); $ inorder (root.rightnode); $ } - } - //recursi

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From here, we will be explaining the Java data structure, is it ready? Let ' s go~~the data structure model in Java can be divided into several parts:1. Linear structure2. Tree-shaped structure3. Graphic or mesh structureIn the next few, we will explain these data

//Delete a node in a binary sort tree the PublicBstree Deletebstree (Bstree bstree,intkey) { the if(Bstree = =NULL) { - return NULL; - } the the if(Bstree.data = =key) { the //first case: leaf node the if(Bstree.left = =NULL Bstree.right = =NULL) { -Bstree =NULL; the } the //second case: node has left dial hand nodes. the if(Bstree.left! =NULL Bstree.right = =NULL) {94Bstree =Bstree.left; t

1 PackageIYou.neugle.search;2 3 Public classHash_search {4 Private Static intm = 13;5 Private Static int[] hash =New int[m];6 Private Static int[] Array =New int[] {13, 25, 2, 60, 39, 52 };7 8 Public Static voidMain (string[] args) {9 Inserthash ();TenSYSTEM.OUT.PRINTLN ("Hash table is established as follows:"); OneSystem.out.print ("["); A for(inti = 0; i ) { - System.out.print (Hash[i]); - if(I! = hash.length-1) { theSystem.out.print (","); -

arraybub{[] (max) {=[max]= } (value) {[]=value++} () { (j=jBubblesort {(string[] args) {maxSize = Arraybub arr = Arraybub (maxSize) Arr.insert () Arr.insert () arr.inse RT () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.insert () Arr.display () Arr.bubblesort () Arr.display ()} () {}}First look at the above code, bubble sort core is: Bubblesort () method, for loop nesting, the outer layer of each row minus one,

public class Myarraylist　　Self-made data structures (containers)-java development with the most ArrayList and HashMap

GCD Greatest Common divisorMethod: Euclid Algorithm (Euclidean method),"Thought" recursionIdeasCode1 Public classMain {2 Public Static intgcdintPintq) {3 if(q = 0) {4 returnp;5 }6 intr = p%Q;7 returngcd (q, R);8 }9}LCM Least common multipleThe pursuit of convenient formula method to solve.IdeasCode1 Public classMain {2 Public Static intgcdintPintq) {3 if(q = 0) {4 returnp;5 }6 intr = p%Q;7 ret

only inherit one parent classPolymorphicFour, algorithm effectiveness analysis:4.1 Time Complexity: Https://baike.baidu.com/item/%E6%97%B6%E9%97%B4%E5%A4%8D%E6%9D%82%E5%BA%A6/1894057?fr=aladdin (Baidu Connection)　　F (N) =n! (factorial) n-times with a time complexity of n4.2 Space Complexity: Https://baike.baidu.com/item/%E7%A9%BA%E9%97%B4%E5%A4%8D%E6%9D%82%E5%BA%A6/9664257?fr=aladdin (Baidu Connection)V. Abstract classTo include one or more abstract methods (without a method body): To implement

Stackelement see the implementation of the stackPackage Com.lip.datastruture.stack;public class QueueOperation Result:Implementation of the queue of data structures (JAVA)

' (', directly into the stack, if ') ', out of the stack and sequential output operator until the first ' (', the first encountered ' ('), but not the output, if the arithmetic character, the top element of the stack and the current element precedence: If the top of the stack operator precedence >= the current element priority , out of the stack and sequential output operator until the top element of the stack priority 5, repeat the 3rd until the expression scan is complete.6, sequentially out

public int getheight () {if (this==null) return 0;if (This.leftnode = = NULL This.rightnode = = null) retu RN 1;int lheight = This.leftNode.getHeight (); int rheight = This.rightNode.getHeight (); return lheight > Rheight? Lheight + 1:rheight + 1;}4. Layer k of the print tree (recursive implementation)Principle: Can be understood as the print root of the K-layer, that is, print the root of the child's k-1 layer, when k=0, can be directly printed outPrint the level layer of a tree public void P

()) { CharCH =Thestack.pop (); Output= output +ch; } returnoutput; } } classReverseapp { Public Static voidMain (string[] args)throwsIOException {String input, output; while(true) {System.out.print ("Enter A string:"); System.out.flush (); Input=getString1 (); if(Input.equals ("")) { Break; } reverser Thereverser=Newreverser (input); Output=Thereverser.dorev (); System.out.println ("Reversed:" +output); } } Public StaticString getString

Perhaps you have mastered the use of Java. util package inside the various data structures, but I would like to say a Java version of the data structure and algorithms, I hope to help you.Linear table, linked list, hash table is a common

1. HashMap Overview HashMap is an asynchronous implementation of the map interface based on a hash table (Hashtable is similar to HashMap, the only difference being that the method in Hashtalbe is thread-safe, that is, synchronous). This implementation provides all the optional mapping operations and allows NULL values and NULL keys to be used. This class does not guarantee the order of mappings, especially if it does not guarantee that the order is immutable. 2. Four points of attention on Has