Back to basics 21 - Matrix replicating
Reindex a vector
Rotate a Matrix by 90 degrees
Say something funny
Matlab Basics II - Count rows in a matrix
Replicate elements in vectors (★★★)
Create a vector of n alternating ones and minus ones (★★)
Variance computation (★★★)
Magnitude of a vector (★★★)
Matrix indexing with two vectors of indices (★★)
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