Your test case doesn't match up with the problem statement. The problem statement mentions monotonically decreasing, while the test case tests for just decreasing.
Return the first and last characters of a character array
Divisible by 10
Number Puzzle - 033
Number Puzzle - 057
Number Puzzle - 099
Number Puzzle - 043
Number Puzzle - 063
Number Puzzle - 059
Find the Pattern 1
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