Please add more cases to the test suite, or else it is trivial to solve this problem.
Rafael is right and since you made this into a badge problem it is even more essential to fix this
Return the first and last characters of a character array
Check if number exists in vector
Generate a vector like 1,2,2,3,3,3,4,4,4,4
03 - Matrix Variables 1
Find Logic 4
Efficiency of a single phase Transformer
Cutoff OF Exam
Find Logic 19
Find Logic 7
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