Additional test cases have been added.
Alphabetize by last name
2 b | ~ 2 b
Sum of first n terms of a harmonic progression
Doubling elements in a vector
Find last zero for each column
Matrix with different incremental runs
Create a vector whose elements depend on the previous element
Sort an array of structures
Find all the zeros of sinus , cosinus and tangent in a given interval
Set the array elements whose value is 13 to 0
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