![](https://img2023.cnblogs.com/blog/2854421/202301/2854421-20230112170736463-713518235.png)

 

**二维数组**实际上是由多个一维数组组成的，每个一维数组的列数可以不一样

![](https://img2023.cnblogs.com/blog/2854421/202302/2854421-20230222200210650-1331851091.png)