computer algorithm book

began to review the computer Foundation in NetEase Cloud class, thank you for the opportunity of my teacher to learn!1. The social nature problem is transformed into an algorithm by symbolic and computational method, and then it becomes the result of an algorithm by calculation, and then the result of solving the problem by semantics.2. Basic elements of a high-l

Any calculation problem can be accomplished by performing a series of operations in a specific order. The problem-solving process (procedure) is called an algorithm (algorithm), which includes:1. Action performed (action)2. Sequence of actions performed (order)The following example shows how important it is to correctly specify the order in which operations are performed:Consider the "Sunrise

decision parameters.Area 1In the right half, each build increments the Y coordinate by 1 and determines whether the X coordinate increases based on the decision parameters.Zone 2　　The next step is the derivation of the decision parameters:　　The parabolic equation is, then the curve equation has two forms:　　　Zone 1:　　At that time: the coordinates of the next point should be selected at this time:　　At that time: the coordinates of the next point should be selected at this time:　　　　　　Zone 2:　　At t

-type Domino.The Fillboard () function is a function that overrides the chessboard with some kind of L-shaped domino. Fillchessboard () is a recursive function that solves the whole problem, and is entered as a checkerboard pointer. The participation level is also K. Blue_row,blue_col is the position of the special lattice in the coordinate system of the sub-chessboard, Baserow and Basecol are the coordinates of the sub-chessboard (0,0) points throughout the large checkerboard.Keep up with the n

]=1;Putpixel (X0-y,y0-x,color);A[x0-y][y0-x]=1;if (dd+=x*2.0+3;else{d+=2.0* (x-y) +5;y--;}x + +;}}void Edge_mark_fill (int color) {int Driver=vga,mode=vgahi;Initgraph (driver,mode, "");SetBkColor (0);int x;int y;Midpointcircle (100,100,100,255);Midpointcircle (301,100,100,255);//Circle stagger a bitDraw graphicsFor (x=0,y=100;x{Putpixel (X,y,color);A[x][y]=1;}200 Stagger a bitFor (x=201,y=300;x{Putpixel (X,y,color);A[x][y]=1;}BOOL Inside=false;for (y=0;y{Inside=false;for (x=0;x{if (side[y]==1)Br

Algorithm Description:The algorithm of the midpoint generation of a circleIf we construct the functionF(x,y)= x2+ y2- R2, the points on the circle haveF(x,y) = 0, for points outside the circleF(x,y) >0, for points within the circleF(x,y) As with the midpoint drawing line method, the construction discriminant:D=F(M)=F( xp+1,yp -0.5) = (XP+ 1)2+(YP-0.5)2- R2if D P1 is the next pixel, and then the discrimina

Test instructions a little hard to read.Network flow-ek Algorithm-ACM computer Factory-composition Focus//time:0ms Memory:208k#include ACM/ICPC ACM Computer Factory-ek Algorithm (POJ3436)

inlierand then in the code, the author once again made a match, matchlocal, in my opinion and Findconsensus's purpose is the same, but also through the relative point of distance to determine whether the characteristics of the feature, and then do a match on these features, is selected in, Finally, the points of Inlier and the points of matchlocal are combined as the final feature points. the code for Matchlocal is as follows:void matcher::matchlocal (const vectorWell, because of the time relat

is reduced, making the algorithm more direct and easier to understand. First, let's take a look at the priority distribution when playing chess and the scoring plan I specified for it: First, we declare that we will not implement the five sub-links in this part of the algorithm, because the outcome has been separated at this time. We can call the judge method of the checkboard class. This is just to copy

this point, each processor calculates the intersection coordinates of a curve and a scan line based on the circle or ellipse equation. for . Each processor applies a curve equation to determine the location of the intersection with the scan line for which it is set. After assigning a set of pixels to each processor, the processor calculates the distance (or square of the distance) of each pixel to the curve. If the calculated distance is less than the pre-specified value, the pixel is dra

Algorithm Description:　　For a general position ellipse, for example, you can pan the center to the coordinate origin, determine the ellipse pixel point set at the standard position of the center at the origin, and then pan to the position, transforming the problem into a standard position of the ellipse's drawing problem.If the long and short axes of an ellipse are not parallel to the axis x and y, then the rotation coordinate transformation can be us

of the recursive solution, assuming that the four sub-problems have been solved, we should use a specific L-shaped dominoes cover three false special lattice, so that the entire large board has been solved. we will think of the entire solution process, first of all to simplify the problem, simplified to directly see the point of the answer, and then analyze a slightly more complex situation, summarize the law, using the idea of divided treatment , the problem is resolved into four sub-problems,

///////////////////////////////////////////////////////////////////////////////CCohen_ Sutherlandview message handlersvoid ccohen_sutherlandview::onlbuttondown (UINT nflags, CPoint point) {//Todo:add your Me Ssage handler code here and/or call Defaultflag = 1; XL = Point.x; YT = Point.y; Cview::onlbuttondown (nflags, point);} void Ccohen_sutherlandview::onmousemove (UINT nflags, CPoint point) {//Todo:add your message handler code here and/or CAL L DEFAULTIF (flag = = 1) {XR = Point.x; YB = Point

line, x = y, so the horizontal deflection and the vertical deflection voltage are equal . in each case, the specified end can be a smooth line with a slope of M is generated between the points . in a raster system, the horizontal and vertical steps are limited by the spacing of pixels by drawing lines in pixels . that is, the line must be sampled at discrete locations, and the pixels closest to the line are determined at each sampling location. Figure 3.7 shows the scanning conversion process

#include using namespace Std;#define N 100int g_array[n]; Store the input numberstatic int count; Number of elements to storeinitialization functionvoid Initial (){cout Cin >> Count;cout for (int i = 0; i {CIN >> G_array[i];}}//merge function void merge (int a[], int l, int m, int r) { int i = l, j = m+1, k = l; int b[n]; while (i { if (A[i] { b[k++] = a[i++]; } Else { b[k++] = a[j++]; } } if (i > M){for (int p = j; p {b[k++] = a[p];}}Else{for (int p = i; P {b[k++] = a[p]

Seed filling is actually very simple, computer graphics introduced in the use of stacks, feel the author is not brain water, direct use of a queue with a wide search on it, ah, but I do not bother to write, direct a recursive forget, interested students to try their own#include #include #include #include int graph[500][500];void Scanline_seed_fill (int color,int sx,int sy){Graph[sx][sy] = 1;Putpixel (SX, SY, color);if (graph[sx+1][sy] = = 0 sx+1 {Sle

improved. The following is a picture. Let's sort out the ideas and explain the performance clearly. It's good to say this to the mentor. You can write an article. Espart is the name of this algorithm given to me when I wrote an article. It didn't take a few days for me to write a paper. In less than a week, I just gave the first draft to my tutor and changed it, I made some comments and saw where to accept this article. It happened that the

parameter Rx and ryUsing polar coordinates: R and θ, you can also describe a standard position ellipse in the form of a parametric equation:Θ, called an elliptical centrifugal angle (eccentricangle), is measured along the circumference of its enclosing circle. If rx> ry, the radius of the enclosing circle is R = Rx (see figure 3.23), otherwise the radius of the enclosing circle is R = RyAs with the circle algorithm, considering the symmetry of the el

.///////////////////////////////////////////////////////////////// #include "stdafx.h" #include "WuLine.h" #include "WuAnti.h" #include 3) OnDraw functionvoid Cwulineview::ondraw (cdc* pDC) {cwulinedoc* PDoc = GetDocument (); Assert_valid (PDOC);//Todo:add Draw code for native data Herecwuanti *line=new cwuanti;//dynamically creates a line drawing class object line-> MoveTo (100,100); Line->lineto (500,500, PDC); }4) Operation effect (magnification 25 times times)Original address: htt

1. Abstract computing object and function definition and construction method, the program is composed of abstract constructs.2. Program: Constructed by a basic action instruction, a combination of several instructions or an execution sequence for the implementation of complex actions. The program actuator saves the underlying operation at development time.3. Abstract process, combination and construction level of computer system. The procedure is cons