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
Reverse Run-Length Encoder
Getting the row and column location from a matrix
07 - Common functions and indexing 1
Compute Fibonacci Number
Cryptography with A Square Matrix : Decoding
Create initial basic feasible solution for transportation problems - North-West Corner Method
Produce the following matrix
Good Morning :)
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