C++实现蛇形矩阵

形如下面的矩阵称为蛇形矩阵：

也称为螺旋矩阵。

源代码：

/*************************************************************************    > File Name: snake_matrix.cpp    > Author:     > Mail:     > Created Time: 2016年04月04日 星期一 17时29分57秒 ************************************************************************/#include <iostream>using namespace std;#define N  1000class SnckMatrix{    public:        SnckMatrix(int n):num(n){            FillMtrix();        }        void print();    private:        void FillMtrix();    private:        int matrix[N][N];         int num;};void SnckMatrix::FillMtrix(){    int x = 0, y = 0;    int val = 0;    int curr_x = num, curr_y = num;    while(x < curr_x && y < curr_y){        //填充一行        for(int i = y; i < curr_y; ++i){            matrix[x][i] = ++val;        }        for(int i = x+1; i < curr_x; ++i){            matrix[i][curr_y-1] = ++val;        }        for(int i = curr_y-2; i > y; --i){            matrix[curr_x-1][i] = ++val;        }        for(int i = curr_x-1; i > x; --i){            matrix[i][x] = ++val;        }        x++;        y++;        curr_x--;        curr_y--;    }}void SnckMatrix::print(){    for(int i = 0; i < num; ++i){        for(int j = 0; j < num; ++j){            cout << matrix[i][j] << "\t";        }        cout << endl;    }}int main(){    int size;    cout << "Input the matrix size: ";    cin >> size;    SnckMatrix matrix(size);    matrix.print();    return 0;}

运行结果：