The description of this problem is not very clear. It's really asking for the first and last row for each unique value in the first column.
"However there will be more than one row index and that makes this question challenging." - that really explains nothing to me
Insert zeros into vector
Calculate distance travelled when given radius and rotations
Check if the input is a strong prime
Fill the matrix - 1
Produce the following matrix
Longest Sequence of NaNs
Repeat string n times - 2
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