题目描述

写完蛇形矩阵后突然想到这个和蛇形矩阵有点类似。

样例

#include <iostream>
using namespace std;
int main(){
    int n;
    while (cin >> n,n != 0){
        int left = 0,top = 0,right = n - 1,bottom = n - 1;
        int k = 1;
        int a[110][110];
        while (left <= right && top <= bottom){
            for (int i = left; i <= right; i++){
                a[top][i] = k;
            }
            for (int i = top + 1; i <= bottom; i++) {
                a[i][right] = k;
            }
            for (int i = right - 1; i >= left && top < bottom; i--){
                a[bottom][i] = k;
            }
            for (int i = bottom - 1; i > top && left < right; i--){
                a[i][left] = k;
            }
            top++;
            bottom--;
            left++;
            right--;
            k++;
        }
        for (int i = 0; i < n; i++){
            for (int j = 0; j < n; j++){
                cout << a[i][j] << " ";
            }
            cout << endl;
        }
        cout << endl;
    }
    return 0;
}