Input a Matrix x, Output y is the matrix rotating x 90 degrees clockwise
why i cannot use seqreverse here?
You should make more test suites, currently you can just set y to the one correct result.
Determine if a Given Number is a Triangle Number
Fill a zeros matrix
Magic is simple (for beginners)
Do Fast Fourier Transformation
Beginner's Problem - Squaring
Determine Whether an array is empty
Get the length of a given vector
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