I think the third example in the problem statement is incorrect. The input is a row (it's set up as a column, but then is transposed), but the output is a column.
There may have some limitations when resulting rows are with different lengthes.
Extract leading non-zero digit
Wrapping the Tower of Pisa
Calculate the area of a triangle between three points
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Is the input divisible by 3?
Create a dictionary
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