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
Tell me the slope
Vectorize the digits of an Integer
Try 1.5.4: Celsius to Fahrenheit
Find the index of the largest value in any vector X=[4,3,4,5,9,12,0,4.....5]
Solving Quadratic Equations (Version 1)
Duration of a trip in minutes
Repeat string n times - 3
Dealing with correlation results!
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