In the test cases you wrote "your_fcn_name(x)" and not "your_fcn_name(l,b,h)" ;-)
radius of a spherical planet
select the primes of a vector
Check if equal
Determine the length of a string of characters
Find the dimensions of a matrix
Find the square of the sum of the digits of a number
Convert a number to its Roman representation
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Concatenate two strings
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