C++

What do you need to pay attention to from pure C environment to C + + environment?Yes, although C + + has been claimed to be compatible with C, and many people even think C is a C + + subset, but C-brain residue must know that the two have a great

Today, my classmate asked me a pointer subtraction problem, originally did not think carefully, record the relevant experience, thank the classmateThe source code is as follows:1#include 2 3 intMain ()4 {5 6 inta[]={0,1};7 int*p,*Q;8 9 Tenp=&

tag: blog OS Io ar CTI Div Log Type Using system; using system. collections. generic; using system. text; using system. diagnostics; namespace utils {// /// // common tool class -- System Log class // usage / // writeeventlog: write System logs

Similar to mine clearance games, some mines are walking in some grids. The specific burial position is unclear, but the total number of mines in each grid and the eight grids around it is known. Which line in the middle can have a maximum number of

# XXX, A ### B, and Microsoft's unique # @ xxx appear in the macro definition. Separate explanations. 1 Define Sb (x) # x It is used to convert the input into a string. String STR = Sb (123 ); 2 define BB (x) uxx # x This is a symbolic

Using system; using system. collections. generic; using system. text; using system. reflection; namespace utils {// /// // common tool class -- Application Property Information category class // ------------------------------------------------- /

HDU 1158 Employment Planning (DP)Problem DescriptionA project manager wants to determine the number of the workers needed in every month. he does know the minimal number of the workers needed in each month. when he hires or fires a worker, there

Va 11330-Andy & #39; s Shoes (replacement) Link to the question: Ultraviolet A 11330-Andy's Shoes Andy has a lot of shoes and is lost everywhere. Later, he put all his shoes back in a row, ensuring that the left and right sides of the shoes

Ultraviolet A 12130-Summits (BFS + greedy)Ultraviolet A 12130-Summits Question Link Question: given an h * w graph, each position has a value. Now we need to determine the number of peaks and peaks on this graph. The peak is defined as this. There

Expected steps for BNU 34978 Tower Question link: Click the open link When we use dp [I] to represent random I plates, we can restore the expected number of steps required in the original position. F [I] indicates the number of steps for playing the

POJ 3264 Balanced Lineup ST table   Question: Give a string of numbers and ask for the difference between the maximum and minimum values of the interval. Train of Thought: For RMQ, we can use O (N ^ 2) preprocessing, and then each time we query O (1)

POJ1269_Intersecting Lines (ry/Cross Product) Solution report Question Portal Question: Determine the positional relationship of a straight line (parallel, coincidence, intersection) Ideas: You can use cross product to determine the positional

Initialization of combination and inheritance in C ++ In C ++, the initialization of a single class is relatively simple. When a class inherits another class, or a class still exists Class { ,,, }; Class B { ,,, }; Class C: classA {

URAL 1297 suffix array: Find the longest response substring Train of Thought: This afternoon I started WAF and went through Discuss. There is an array in it: ABCDEFDCBA. This output is ABCD, so it is wrong. Then you will know that the suffix array

POJ 2777 Count Color (line segment tree Interval Update and query) DescriptionChosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new problem. There is a very long board

Hdu 4927 Series 1 Question link: http://acm.hdu.edu.cn/showproblem.php? Pid = 1, 4927 The general idea is to subtract two adjacent numbers, then get a string of numbers, and continue to reduce them. When there is one remaining number, ask how much

LCA algorithm Learning (recent common ancestor) poj 1330 Poj1330 Tarjan is used to solve the problem of the recent common ancestor. A Deep Search Tree is formed from the root node. The processing technique is to trace back to the node u, after the

POJ 1856 Sea Battle (BFS ). ~~~~ Question: Here is the number of rectangles in the R * C Graph Connected by the graph. Note: IfShipsWere placed correctly (I. e ., there are only rectangles that do not touch each other even with a corner), print the

Poj2607Fire Station (floyd)Question link: Ah, haha, click here to bring meAt that time, I felt very familiar with this question, but the more I thought about it, the more confused I was... I don't know what to think during the competition, but the

HDU Hamilton bypass world problem (dfs) Problem Description is a regular solid 12-axis. Its 20 vertices mark the world's 20 famous cities. You set off from a city and go back to the city just once. The first 20 rows of Input have three numbers in