Exercise: Nested Arrays

Arrays can contain other arrays:

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What is the type of this variable?

Use an array such as the above to write a function transpose which will transpose a matrix (turn rows into columns):

2584567⎤8⎥9⎦transpose==1473⎤6⎥9⎦123

Copy the code below to https://play.rust-lang.org/ and implement the function. This function only operates on 3x3 matrices.

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