nicely done!first one use ndgrid finish the orginal expansion in this one.
I think it's the first time I see this function in Cody.
Angle between Two Vectors
Duplicate each element of a vector.
Find the nearest integer
Duplicate a character
Lowest sum from a group of digits
Sums of Multiple Pairs of Triangular Numbers
Two fractions, one sum
Still more miles to go before I sleep
The Hills Are Alive...
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