Additional test cases have been added.
A nice opportunity to use toeplitz :)
Test suite really needs more test cases!
Determine if a Given Number is a Triangle Number
Roll the Dice!
Energy of a photon
Count up then down
Determine the number of odd integers in a vector
First non-zero element in each column
Duplicate each element of a vector.
Find the elements of a matrix according to a defined property.
Remove NaN ?
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