Remove all the consonants
Length of the hypotenuse
Make roundn function
Element-wise vector product (★)
Prime number check (★★)
Create logarithmically spaced values (★)
Create a vector of n alternating ones and zeros (★★)
Reindex a vector (★★)
Get the elements of diagonal and antidiagonal for any m-by-n matrix (★★★★)
Column Removal (★★★)
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