题目描述

蛇形矩阵
多考虑思路，灵活运用，多看

样例

#include <iostream>
using namespace std;

int main() {
    int n, m;
    cin >> n >> m;
    int matrix[100][100];
    int num = 1;
    int top = 0, bottom = n - 1, left = 0, right = m - 1;

    while (num <= n * m) {
        // 从左到右填充顶部行
        for (int j = left; j <= right && num <= n * m; j++) {
            matrix[top][j] = num++;
        }
        top++;
        // 从上到下填充右列
        for (int i = top; i <= bottom && num <= n * m; i++) {
            matrix[i][right] = num++;
        }
        right--;
        // 从右到左填充底部行
        for (int j = right; j >= left && num <= n * m; j--) {
            matrix[bottom][j] = num++;
        }
        bottom--;
        // 从下到上填充左列
        for (int i = bottom; i >= top && num <= n * m; i--) {
            matrix[i][left] = num++;
        }
        left++;
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            cout << matrix[i][j] << " ";
        }
        cout << endl;
    }

    return 0;
}