For given positive integer n, take factorial of that number. How many trailing zeros does it have?
Example: factorial(11) = 39916800
Its last zero-digit count is 2.
Optional: Can you make an efficient algorithm for a very large n?
Determine whether a vector is monotonically increasing
How many monitors are connected ?
A matrix of introverts
Compare two input matrices
Under the sea: Snell's law & total internal reflection
The last non-zero digit of a factorial
Number of paths on a n-dimensional grid
Make a rainbow matrix (follow-up to checkerboard matrix)
Smallest n, for n! to have m trailing zero digits
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