When the input is certainly not the global variable z, your function must return false. Otherwise return true. All inputs & variable values will be scalar.
Find the sum of all the numbers of the input vector
What are the odds?
Rotate a Matrix by 90 degrees
Back to basics: adding comments to your code
Make your own Test Suite (part 2)
Seemingly impossible problem
Guess the number I'm thinking of
"Percentages may not total 100 due to rounding"
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