Covering some basic topics I haven't seen elsewhere on Cody.
Given an input matrix, generate an output matrix that consists of the input matrix replicated in a 2 by 2 pattern Examples:
[1] -> [1 1 1 1]
[1 2 -> [1 2 1 2 3 4] 3 4 3 4 1 2 1 2 3 4 3 4]
1137 Solvers
Is my wife right? Now with even more wrong husband
1145 Solvers
281 Solvers
The sum of the numbers in the vector
341 Solvers
Is this triangle right-angled?
1918 Solvers