Arrange Vector in descending order
Rotate input square matrix 90 degrees CCW without rot90
Basics: 'Find the eigenvalues of given matrix
Sum the numbers on the main diagonal
Vectors counting by 2
Smallest n, for n! to have m trailing zero digits
The last non-zero digit of a factorial
Under the sea: Snell's law & total internal reflection
Number of paths on a 3d grid
Fractal: area and perimeter of Koch snowflake
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