Your solution is fastest so far.
Good job, Athi.
@Athi, your solution contains many "magic" constant variables that I don't know how you got.
William's solution is much easier to understood, although it is slower than yours.
Thanks li haitao.
Check if sorted
Duplicate each element of a vector.
Set some matrix elements to zero
Make a Star Pyramid
Maximum value in a matrix
Divisible by n, Composite Divisors
The 5th Root
Evened up (or not)
Lights Out 7 - 5x5, x moves
Stress-Strain Properties - 6
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