playstation 4 2015

Topic Link: Click to open the linkThe main idea: to give a sequence, divided into a number of permutation groups, requires the final sequence of the largest dictionary order.The dictionary order is the largest, then from 1 onwards to traverse backward, as far as possible to put a larger numberGives the sequence A1 A2 A3,,, Ai anFor the number of I, there may be three cases, the first to go forward to reach the maximum value of the sequence of AK, then the AK to AI is a rotation, the second AI it

The passage of time is the same speed, but different times give people a different illusion. In general, as you get older, it feels like time is over faster. However, there is another important point is that if the more people suffer or change the more, the slower the time, the happier and more comfortable, the less change, the faster the time. This is also why every trip, although only a few days, but left a lot of memory, but stay at home or unit, feel the time is very short.So there are two w

Topic Link: Click to open the linkThe main idea: to give a graph, there are n points, N, if you want to divide the graph into the same number of K parts, require each of the internal can be linked to each other, then there will be a few k meet the conditions.1, there is a theorem, if a tree to be divided into K nodes of a sub-tree, then there are n/k nodes corresponding to the number of nodes of the subtree is a multiple of K.According to the above theorem, then we can calculate whether a tree c

Aside from the application scenario, it is useless to talk about the design pattern, and it is also forgotten. One day, you need to use only a shared object in the program, maybe you should consider a singleton mode.one day, for some reason, a does not adjust to C, and a can be adjusted by B C, is the proxy modeOne day, there are several interfaces, you need to use some of their features at the same time, perhaps you will use the adapter or bridge modeOne day, when you want your senders and rece

the directory "AA" (This number = number of hidden directories + normal directory). We enter the "AA" directory with the command Ls–al (in order to see the hidden file we add-a parameter)]# Ls-alTotal 8Drwxr-xr-x 2 root root 4096 Nov 6 00:04.Drwxr-x---root root 4096 Nov 6 00:04.(2 in the 3rd row above means that there are 2 subdirectories in the current directory, that is,.)In line 4th above, 14 represents 14 subdirectories in the previous level of the directory. ）The next root represents the o

First, class structure diagramAll classes are implemented this week, and the following are the class diagrams implemented this week:Ii. Progress of the projectAll the code has been written, and the overall test is being done. Although some problems were encountered during the period, we discussed it together and found the information, which finally solved the problem and the project was being perfected.Third, reference books"Java Project Development Practice" Zhongnan University Press,

Array application:var arr=[]//The brackets are like a warehouse;The subscript of the array starts with 0;ARR[ARR.LENGTH-1]Arr.push ("I Am the Last")//To add data to the last digit of the array;Small example, a lot of rotation switch graph switch button, the reason that use a tag, is a:hover state, IE is also supported, more convenient also convenience, save again to do compatibility;The array is very powerful, for example, in the case of the picture switching, the array is used, the current orde

The second way to get elements:document.getElementsByTagName (' TagName ')It is important to note that there is an "s" behind the element, and don't take it for granted as getElementById.This method gets a set of elements, so when used, or when you mobilize a property, remember to add []Example: The difference between Bytagname and Byid methods:Byid except document.getElementById (); There is no other way;and Bytagname In addition to Document.getelement, can also be variable name. getelements to

No matter how, can not break, habits to keep;First of all, the design of the matter, from a senior there consulted.Do the vision, you can consider the first layout, color, then the major focus on the title, and then adjust, adjust the layout of each step to save, and then back to compare which is better.Gold segmentation and rasterization;The front end, when you read JavaScript advanced programming in the morning, notes that if you define a variable in a function and you don't assign a value, it

My path to Python development-first day --- Python BASICS (4) --- December 26, 2015 (smog ), V. Data Operations and Data Operators Arithmetic Operators Arithmetic Operators Operator Description Example + Addition >>> 14-59 - Subtraction >>> 14 - 59 * Multiplication >>> 5 * 1470 / Division >>> 14 / 52.8 % Modulo, th

==>> nested loops Join, hash join, sort merge Join-->> Nested Loops JoinSELECT * from/*+leading (t1) use_nl (T2) */from T1,T2where t1.id=t2.t1_id;The meaning of this hint: leading (t1) means that forcing the first access to the table T1,USE_NL means forcing the use of nested loops.-->> Hash ConnectionSELECT * from/*+leading (t1) use_hash (T2) */from T1,T2where t1.id=t2.t1_id;-->> Sort Merge ConnectionsSelect/*+orderd use_merge (T2) */* from T1,T2where t1.id=t2.t1_id;The sort merge connection is