data structures in java book

Data structures and algorithms in JavaScript (2): queue This article mainly introduces the data structure and algorithm in JavaScript (2): queue is a linear table that allows only one end to be inserted and the other to be deleted, A queue is a First-In-First-Out (FIFO) data structure. For more information, see A queue

add subscribers to the class attribute X_lsit list, all Publishers share all subscribers.For example, Xiao Ming, small army subscribed to Cang teacher, small red small yellow to subscribe to the wave teacher, but Cang teacher update the film, due to share the subscribers, led to small red and small yellow also received new film notice, this is obviously a mistake.So Cang teacher and wave teacher X_list must be independent, need to write in __init__ inside, written self.x_list, so Cang teacher a

F-Qiushi brother and sister paper Time limit:3000/1000ms (java/others) Memory limit:1500/1500kb (java/others)SubmitStatusTo the neutralization, the Heaven Status Yan, all things. Brother Qiushi is a man who pursues the golden mean.Although Qiushi elder brother's admirers many, but Qiushi elder brother does not like the extreme sister paper. So he wanted to pick a middle-of-the-line from all the sister paper

of two parts, data and index respectively.Index, which is a data-indexed file, primarily records the key value of each record and the position at which the record is offset in the file.When mapfile is accessed, the index file is loaded into memory, and the index mapping relationship quickly navigates to the location of the file where the specified record is located.Therefore, the retrieval efficiency of ma

DATA_FILE_NAMEBy observing its folder structure, we can see that mapfile consists of two parts, each of which is data and index.Index, which is a data-indexed file, mainly records the key value of each record and the offset of the record in the file.When Mapfile is interviewed, the index file is loaded into memory, and the index mapping relationship can quickly navigate to the file location where the recor

The National Day has been over for a week, and there is also a week of work. The SDK and documentation are also completed, and the SPI flash read/write function is added to the bootloader. But the heart is empty, I do not know why, happy. This week, I have learned a lot, and I still choose to continue on my own path, no matter what. Always good, everything will be good. I still came to the company on Saturday. What is different from the past is that I no longer work, and I want to learn what I w

iterator is currently pointing. //Safe iterator is safe, when it is 1, he is safe, otherwise unsafe int table, index, safe; Entry: pointer//NextEntry to the node currently iterated : The next node of the current iteration node, because when the security iterator is operating, the node that the entry only has is likely to be modified, so an extra pointer is needed to hold the position of the next node, thus preventing the pointer from being lost dictentry *entry, *nextentry; Lo

We have to admit the fact that in the course of Java Learning we can do some development if we have mastered a variety of programming methods and tools, which is why some training institutions dare to tell you that you can master a language in a few months. But with the development of time, we always feel that this kind of people if not to promote themselves, and finally will only be a yard farm. Technology will change rapidly, at any time in the deve

first vertex is not processed, the algorithm cannot calculate the second vertex to be processed. * If needed, you can store the graph's data (vertex list or adjacency matrix) elsewhere, and then restore them after the sort is complete. * @author eson_15 * @date 2016-4-20 12:16:11 * */public class toposorted {private final int max_verts = 20;private Vertex Vertexarray[]; Stores the array of vertices private int adjmat[][]; A matrix array that stores

, card): Table.append (Card)ifTable.count (Card) >=2: whileTable.count (Card) >0:person.append (Table.pop ()) whileLen (hen)!=0 andLen (haa)! =0:#print "tab:", List (table)i = Hen.popleft ()#hen the cards first#print "Hen put", IRefreshtable (hen, i)#Hen Action#print "hen:", List (hen) #print "tab:", List (table)j = Haa.popleft ()#Haa after the card#print "Haa put", JRefreshtable (Haa, J)#haa Action#print "Haa:", List (HAA)#print "tab:", List (table)#print "Next Turn"

-set receives a tree height effect and is less efficient. Therefore, there are two kinds of improved heuristic algorithms.The first is to merge by rank, and for each node to record his height, change the father of the smaller node to the larger one. If both sides are equal, select one as the father, and the rank of the root node plus one.The second is path compression, and each time the find-set is called, the father of the node found on the path is changed directly to the root node.1make-SET (x

Bucket sortBarrel sequencing has been used since the 1956, and the basic idea of the algorithm is proposed by E.J.ISSAC and R.c.singleton.This algorithm is like having 11 barrels, numbered from 0~10. Each occurrence of a number, in the corresponding number of buckets put aA little flag, and then just count the few small flags in each bucket OK. For example, there are 1 small flags in bucket 2nd, indicating2 appeared once, and in the 3rd barrels there were 1 small flags, indicating that 3 appeare

within a long long range.Sample Input and output Sample Input Sample Output 212+5/4-14*5/3 126 Problem Solving ReportThe subject: Obviously there is no special technique to use the stack to handle.However, there are a few things can be improved, because there is no parentheses, and the data is valid, so we can only use a stack to implement, and once the scan processing off all the *,/,-numbe

After we have successfully written the HelloWorld, we also have a deep understanding of the main function, and mentioned that main is not a keyword, but what is the keyword? This is actually the chapter to study the content, this section of the study of keywords and identifiers, in the identifier we will also explain the Java in the name of the hump;1.1 Key WordsIn Hello World, we found that many of the words are fixed, this is actually a key word in

Knowledge Points: 1, using internal class construction node http://www.cnblogs.com/dolphin0520/p/3811445.html;2, node = data field + Pointer field in Java is a reference to replace the pointer;3, the head node is only the first reference variable, no object;4, insertions and deletions are required to traverse. Current=current.nextPackage database;Three elements: Head node node class (

+size); the while(!query.empty ())94 { theOper SS =Query.front (); Query.pop (); the if(Ss.ope 1) the {98 intpos = Lower_bound (point+1, POINT+SIZE,SS.V)-Point ; Aboutprintf"%lld\n", find (POS)); - }101 Else102 {103ll v =(ll) ss.v;104 intpos = Lower_bound (point+1, POINT+SIZE,SS.L)-Point ; theAdd (pos-1,-v);106pos = Lower_bound (point+1, POINT+SIZE,SS.R)-Point ;107 Add (pos,v);108 }109 } the return 0;111}Uestc_

Lowbit (ll idx) One { A returnIDX (-idx); - } - the voidUpdataf (ll idx,ll Res) - { - if(!idx) - return; + while(IDX N) - { +F[IDX] + =Res; AIDX + =lowbit (IDX); at } - } - - voidUpdatag (ll idx,ll Res) - { - if(!idx) in return; - while(IDX N) to { +G[IDX] + =Res; -IDX + =lowbit (IDX); the } * } $ Panax Notoginseng ll SUMF (ll idx) - { thell res =0; + while(Idx >0) A { theRes + =F[idx]; +IDX-=lowbit (IDX); - } $ returnRes

new string instance and return value, and the value in STR itself does not change. Continuous modification with string, each time a modification produces a temporary object, the overhead is too high. So there are StringBuilder in C # and Java to accommodate the modified results. Example: replacing spaces Voidreplaceblank (charstring[],intlength) {if (string== nulllengthIf you are merging two arrays, the previous copy needs to be moved multiple tim

also, but later there is a problem, that the population table has date data, the original input when the wrong, the format is not, resulting in can not insert, the hundreds of thousands of data I can not see a bar, I just put the data into the use, the method is simple, the asterisk for the specific field column name.I pass the street number exists to determine

One of the major drawbacks of the array is that the length definition can no longer be changed, this program implements a dynamic array, similar to the structure of ArrayList in Java, has the function of increment, delete, sort, traverse, enlarge and append.Implementation of dynamic arrays:/*2013 February 16 19:18:35 This program appends, deletes, sorts, and iterates through the elements in the array. The method in