Remove the air bubbles
Test if two numbers have the same digits
Relative ratio of "1" in binary number
length of a vector
Generate a vector which contains a pyramid pattern (★★★★)
Get the elements of diagonal and antidiagonal for any m-by-n matrix (★★★★)
Remove the row average (★★★)
Reindex a vector (★★)
Element-wise vector product (★)
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