This dog() may be drowsy or function immediately when you call, return 1 or 0 accordingly within 2/10 second.
Select every other element of a vector
Arrange Vector in descending order
Back to basics 23 - Triangular matrix
Permute diagonal and antidiagonal
Volume of a sphere given its surface area
Vectorizing, too easy or too hard?
How to add?
Given a square and a circle, please decide whether the square covers more area.
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