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| #include <iostream>
#include <vector>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cmath>
#define N 15
#define M 20
class point {
public:
int x, y;
point(int X, int Y) {
x = X;
y = Y;
}
point& point::operator = (const point& p) {
this->x = p.x;
this->y = p.y;
return *this;
}
friend std::ostream& operator << (std::ostream& stream, const point& p);
friend bool operator == (const point& p1, const point& p2);
};
std::ostream& operator << (std::ostream& stream, const point& p) {
stream << "(" << p.x << ", " << p.y << ").";
return stream;
}
bool operator == (const point& p1, const point& p2) {
return p1.x == p2.x && p1.y == p2.y;
}
void showMas(bool mas[N][M]) {
for (int i = 0; i < N; ++i) {
for (int j = 0; j < M; ++j) {
std::cout << mas[i][j] << " ";
}
std::cout << std::endl;
}
}
std::vector<point> getCorner(const bool mas[N][M]) {
int Neighbour = 0;
int sumI, sumJ;
sumI = sumJ = 0;
std::vector<point> vec; // вектор угловых точек
for (int i = 1; i < N - 1; ++i) {
for (int j = 1; j < M - 1; ++j) {
if (mas[i][j] == true)
continue;
else {
if (mas[i - 1][j - 1] == true) {
++Neighbour;
sumI += i - 1;
sumJ += j - 1;
}
if (mas[i - 1][j] == true) {
++Neighbour;
sumI += i - 1;
sumJ += j;
}
if (mas[i - 1][j + 1] == true) {
++Neighbour;
sumI += i - 1;
sumJ += j + 1;
}
if (mas[i][j - 1] == true) {
++Neighbour;
sumI += i;
sumJ += j - 1;
}
if (mas[i][j + 1] == true) {
++Neighbour;
sumI += i;
sumJ += j + 1;
}
if (mas[i + 1][j - 1] == true) {
++Neighbour;
sumI += i + 1;
sumJ += j - 1;
}
if (mas[i + 1][j] == true) {
++Neighbour;
sumI += i + 1;
sumJ += j;
}
if (mas[i + 1][j + 1] == true) {
++Neighbour;
sumI += i + 1;
sumJ += j + 1;
}
if (Neighbour == 5 && ((abs(sumI - 5*i) == 3 && sumJ - 5*j == 0) || (sumI - 5*i == 0 && abs(sumJ - 5*j) == 3)
|| (abs(sumI - 5*i) == 2 && abs(sumI - 5*i) == abs(sumJ - 5*j)))
|| Neighbour == 6 && sumI - 6*i != 0 && sumJ - 6*j != 0
|| Neighbour > 6)
vec.push_back(point(i, j));
Neighbour = 0;
sumI = 0;
sumJ = 0;
}
}
}
return vec;
}
point findFreeField(const point p, std::vector<point>& cur, bool mas[N][M]) {
int i = p.x;
int j = p.y;
if (mas[i - 1][j - 1] == false && find(cur.begin(), cur.end(), point(i - 1, j - 1)) == cur.end()) {
cur.push_back(point(i, j));
--i; --j;
} else if (mas[i - 1][j] == false && find(cur.begin(), cur.end(), point(i - 1, j)) == cur.end()) {
cur.push_back(point(i, j));
--i;
} else if (mas[i - 1][j + 1] == false && find(cur.begin(), cur.end(), point(i - 1, j + 1)) == cur.end()) {
cur.push_back(point(i, j));
--i; ++j;
} else if (mas[i][j - 1] == false && find(cur.begin(), cur.end(), point(i, j - 1)) == cur.end()) {
cur.push_back(point(i, j));
--j;
} else if (mas[i][j + 1] == false && find(cur.begin(), cur.end(), point(i, j + 1)) == cur.end()) {
cur.push_back(point(i, j));
++j;
} else if (mas[i + 1][j - 1] == false && find(cur.begin(), cur.end(), point(i + 1, j - 1)) == cur.end()) {
cur.push_back(point(i, j));
++i; --j;
} else if (mas[i + 1][j] == false && find(cur.begin(), cur.end(), point(i + 1, j)) == cur.end()) {
cur.push_back(point(i, j));
++i;
} else if (mas[i + 1][j + 1] == false && find(cur.begin(), cur.end(), point(i + 1, j + 1)) == cur.end()) {
cur.push_back(point(i, j));
++i; ++j;
}
point t(i, j);
return t;
}
bool isborder(const point& p) {
return p.x == 0 || p.x == N - 1 || p.y == 0 || p.y == M - 1;
}
void fillVector(const std::vector<point> vp, bool mas[N][M]) {
std::vector<point>::const_iterator cit;
for (cit = vp.begin(); cit != vp.end(); ++cit) {
mas[cit->x][cit->y] = true;
}
}
void filling(point& p, bool mas[N][M]) {
std::vector<point> cur; // вектор точек массива, которые мы включаем в текущую цепочку
point curpoint = p; // будет ли работать если использовать конст ссылку р?
std::vector<point>::size_type i = 0; // счётчик откатов вектора
while (1) {
curpoint = findFreeField(p, cur, mas);
if (p == curpoint) { // если свободных точек нет,
if (find(cur.begin(), cur.end(), p) == cur.end()) // обязательная проверка наличия этой точки в векторе
cur.push_back(p);
p = cur[cur.size() - i - 1]; // то переходим обратно
++i;
std::cout << "yes i = " << i << std::endl;
if (i == cur.size() - 1) {
break;
}
}
else {
p = curpoint; // если есть, то переходим на свободную
if (isborder(p)) {
std::cout << "no i = " << i << std::endl;
std::cout << "size = " << cur.size() << std::endl;
cur.clear();
return;
}
}
}
if (i >= cur.size() - 1) {
fillVector(cur, mas);
cur.clear();
return;
}
}
void showVec(const std::vector<point>& vec) {
std::vector<point>::const_iterator cit;
for (cit = vec.begin(); cit != vec.end(); ++cit)
std::cout << *cit << " ";
}
int main()
{
setlocale(0, "");
srand((unsigned)time(NULL));
bool mas[N][M];
for (int i = 0; i < N; ++i) {
for (int j = 0; j < M; ++j) {
mas[i][j] = (rand()%4 != 0); // для увеличения числа 1
}
}
showMas(mas);
std::cout << std::endl;
std::vector<point> v;
v = getCorner(mas);
showVec(v);
//std::vector<point>::size_type size = v.size();
/*std::vector<point>::iterator it;
for (it = v.begin(); it != v.end(); ++it) { // с циклом выдаёт ошибку out of range
filling(*it, mas); // исправишь если очень надо
}*/
filling(v[0], mas);
std::cout << std::endl;
showMas(mas);
filling(v[1], mas);
std::cout << std::endl;
showMas(mas);
system("pause>0");
return 0;
} |
