Additional test cases have been added.
Compute a dot product of two vectors x and y
Penny flipping - calculate winning probability (easy)
Return area of square
Create a two dimensional zero matrix
Is this triangle right-angled?
Simple String Concatenation
Find the index of the lowest number in a matrix
Check if inputted variable is a string or a number
Simple Vector Addition
Replace 0 indices in array with 1's
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