data structures and algorithms in java online tutorial

the process data in the lookup table is a change, there is a delete or insert operationBinary sort tree: The structure of a tree is usually not generated at once, but in the process of finding it, inserting it when there is no keyword equal to the given node in the tree. The characteristic is that the root node is larger than the left child, smaller than the right child. You can modify the pointer based on the node location when you delete the

, and we'll talk about sorting algorithms later on.③, delete slowly, according to the value of the element is deleted, we need to find the location of the element, and then the value behind the element to move the whole forward one position. It also takes a lot more time.④, arrays once created, the size is fixed, you cannot dynamically expand the number of elements of the array. If you initialize to a very large array size, it will be wasted memory sp

Java data structures and algorithms (Robert lafore) Chapter 3 /* 3.1 bubblesort. in Java program (listing 3.1) and bubblesort special applet, The in index variable is moved from left to right until the maximum data item is found a

Chapter 7 of Robert lafore, Java data structures and algorithms /* 7.1 modify the partition. Java program (List 7.2) so that the partitionit () method always uses an array (rightmost) data item with the maximum downmarked value as

Java data structures and algorithms (Robert lafore) Chapter 4 /* Write a method in the queue class of the program job 4.1 For the queue. Java program (listing 4.4) to display the queue content. Note that this is not a simple display of the array content. It is required to di

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

to implement, tracking the algorithm is not straightforward.Other interval sequencesThe selection interval sequence can be called a magic. Only the formula h=h*3+1 generation interval sequence is discussed here, but the application of other interval sequences has achieved varying degrees of success. There is only one absolute condition, that is, the gradually decreasing interval must be equal to one at a time, so the last order is a normal insertion sort.The efficiency of the hill sortSo far, n

. The algorithm is then filtered up.Note: Up and down, filtering up is only compared with a parent node and stops filtering when it is smaller than the parent node.　　5. Complete Java Heap CodeFirst we need to know some of the main points of using arrays to represent heaps. If the index of the node in the array is x, then:The left child node of the node is 2*index+1,The right child node of the node is 2*index+2,The parent node of the node is (index-1)/

right) {//Why J plus a 1, and I do not add 1 because the following loop is judged to start with--j and ++i.// The base element is selected Array[left], that is, the first element, so Zoo starts from the second element to compare int i = left;int J = Right+1;int pivot = array[left];//pivot for the selected datum element (head element) int Si Ze = right-left + 1;if (size >= 3) {pivot = medianOf3 (array, left, right);//array range is greater than 3, the datum element selects an intermediate value.

Arrays are the most widely used data storage structures. It is implanted in most programming languages.Basic knowledge of arrays in JavaCreate an arrayThey are treated as objects in Java, so you must use the new operator to create an array:Int[] Intarray;Defines a reference to an array Ingarray = new int[100]; Creates the array, and//sets int array to refer to it

when the display, but, The next time the element is inserted, the new element will replace the position of the last element.3) Find optimization--two points to findpublic int find (int value) { int start = 0; int end = Number-1; while (End>start) { int index = (end + start)/2; if (array[index]==value) { return index; } else if (Array[index] >value) { end = index-1; } else { start = in

(20); Thequeue.insert (30); Thequeue.insert (40); Thequeue.remove (); Thequeue.remove (); Thequeue.remove (); Thequeue.insert (50); Thequeue.insert (60); Thequeue.insert (70); Thequeue.insert (80); while(!Thequeue.isempty ()) { Longn =Thequeue.remove (); System.out.print (n); // Max, Max, Max.System.out.print (""); } System.out.println (""); Priorityq THEPQ=NewPRIORITYQ (5); Thepq.insert (30); Thepq.insert (50); Thepq.insert (10); Thepq.insert (40); Thepq.insert

Java data structures and algorithms (iii) -- simple sorting Data alone is not enough. Data presentation often needs to be arranged in a certain order. The higher the requirement, the more complicated the sorting. This article only

//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 (","); -

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

()) { 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

Chapter 6 of Robert lafore, Java data structures and algorithms /* 6.1 assume that you have bought a cheap handheld computer, but find that its built-in chip cannot be used for multiplication and can only be used for addition. To get rid of this dilemma, you need to write your own program, write a recursive method mult

("Lookup data does not exist"); the return NULL; the } + -System.out.println ("Find successful, data is:" + This. list[p]); the return This. list[p];Bayi } the the //Sequential Table Size - Public intSizeOf () { - return This. Listlen; the } the the Public voidPrint () { theSystem.out.print ("["); - for(inti = 0; I This. list.length;