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
136 Solvers
4162 Solvers
Back to basics 19 - character types
226 Solvers
207 Solvers
Number of digits in an integer
338 Solvers
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