Too many clues are given in the Solution Template.
Also, Problem Statement is inconsistent with Test Suite (and Solution Template). It should say: "Create a function that subtracts b from a" (not "a from b").
Sum the real and imaginary parts of a complex number
Create a square matrix of zeros of even order
Select primes from the matrix.
Remove all the columns contains only zero
calculate the day of the year from a date string.
Translate German decimals to English decimals
What's my favourite food?
Persistence will help you solve almost any problem.
Distance between Berlin and New York in km
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