输入一个矩阵，按照从外向里以顺时针的顺序依次打印出每一个数字。 **示例 1：** ``` 输入：matrix = [[1,2,3],[4,5,6],[7,8,9]] 输出：[1,2,3,6,9,8,7,4,5] ``` **示例 2：** ``` 输入：matrix = [[1,2,3,4],[5,6,7,8],[9,10,11,12]] 输出：[1,2,3,4,8,12,11,10,9,5,6,7] ``` **限制：** - `0 <= matrix.length <= 100` - `0 <= matrix[i].length <= 100` [leetcode](https://leetcode-cn.com/problems/shun-shi-zhen-da-yin-ju-zhen-lcof)
输入一个矩阵，按照从外向里以顺时针的顺序依次打印出每一个数字。
示例 1：
示例 2：
限制：
0 <= matrix.length <= 1000 <= matrix[i].length <= 100leetcode