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]
Angle between two vectors
Back to basics 25 - Valid variable names
Duplicate each element of a vector.
Area of a triangle
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Find the elements of a matrix according to a defined property.
Matrix which contains the values of an other matrix A at the given locations.
A quadrant matrix
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