Write a function that accepts as input a vector and returns the same vector, but retaining only the first occurrence of an element whenever there is consecutive repetition of this element.
in -> [1 2 2 2 3 4 4 3 5]
out-> [1 2 3 4 3 5]
Encode Roman Numerals
Flip the main diagonal of a matrix
Set some matrix elements to zero
Divisors of an integer
Duplicate a character
vectorization in N
A quadrant matrix
Find the elements of a matrix according to a defined property.
First non-zero element in each column
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
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