read question carefully!!!
Design test case carefully....
To avoid non-desired usages, like pi, it is necessary to not place pi in the function name. The function can be searched for forbidden function usages. There is an aspect of cat and mouse in Cody Challenges.
I agree. Disallow usage of PI for fairer scoring of your problem. Neat question!
Sum of first n terms of a harmonic progression
Doubling elements in a vector
Try 1.5.4: Celsius to Fahrenheit
Sum of odd numbers in a matrix
Find out missing number from a vector of 9 elements
Identify the heavier bag
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Reverse the elements of an array
Accessing elements on the diagonal
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