Additional test cases have been added.
I guess the test suite needs some improvement.
Inner product of two vectors
Return the first and last characters of a character array
Who invented zero?
Is it a number?
Back to Basics - Find no. of elements in a matrix?
Product of all elements in an array
Basic Quadratic Equation
Check if there are white spaces in the input string
Repetition of matrices
Sum of unique multiples of 3 and 5
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