Check if a inputted variable is a number or a string, given a string input (i.e. '1' is 1 and thus a number, 'a' is a string).
Additional test cases have been added.
Find the sum of all the numbers of the input vector
First N Perfect Squares
Angle between two vectors
Change matrix to vector
Check availability of a number in an array
Vector indexing: lower than mean
Find the sum of the largest two elements in a vector
Matrix Generation from Vector Multiplication
Simple Vector Addition
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