18 lines
452 B
C++
18 lines
452 B
C++
#include <vector>
|
|
#include <iostream>
|
|
using namespace std;
|
|
int main() {
|
|
const int n = 5;
|
|
const int dx[] = {0, 1, 0, -1}, dy[] = {1, 0, -1, 0};
|
|
int x = 0, y = -1, c = 0;
|
|
vector<vector<int>> m(n, vector<int>(n));
|
|
for (int i = 0, im = 0; i < n + n - 1; ++i, im = i % 4)
|
|
for (int j = 0, jlen = (n + n - i) / 2; j < jlen; ++j)
|
|
m[x += dx[im]][y += dy[im]] = ++c;
|
|
for (auto & r : m) {
|
|
for (auto & v : r)
|
|
cout << v << ' ';
|
|
cout << endl;
|
|
}
|
|
}
|