It's a good problem, and I liked that you've included even a motivation for it (most problems at Cody are unpolished and unlike yours). However, most Cody players would probably skip this problem because programming problems are usually very objective, they will give us a task with maybe some examples of expected output.
Create a cell array out of a struct
First non-zero element in each column
Reindex a vector
subtract central cross
An Ohm's Law Calculator
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