You really need to supply more test cases if you want to go far in software engineering...
This is just lame, and without a proper test case.
Terrible test set.
like a joke
Sums with Excluded Digits
Is the input divisible by 3?
Sum of odd numbers in a matrix
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Rotate a Matrix
Get the length of a given vector
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