对于具有三维或更多维度的数组，有哪些有趣/实用的用途？

When using arrays I generally use only a one or two dimensional array -- very rarely three or more. I'm just kind of curious, what are some interesting/practical uses for arrays with three or more dimensions? Have you ever used an array with four or more dimensions? I had a professor in college use a six dimensional array in a program he demonstrated in class...ever had more than this?When using arrays I generally use only a one or