A lot of beautiful solutions.
Now, that's a neat and cool solution.
Very neat solution
He just wrote all the matrices...that's not neat, but everyone has the right to an opinion.
Another good one.
Number of 1s in the Binary Representation of a Number
System of equations
Change the sign of even index entries of the reversed vector
Test if two numbers have the same digits
Is it an Armstrong number?
Finding neighbors of [-1:1] in a matrix....
Poker Card Deal!
Find the next prime number
Find number patterns in rows of a matrix...
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