In test 1 why the iron in x(4,1) did not moved to the top !?
x(4,1) is equidistant to both upper and lower magnet, that's why...
Find the sum of all the numbers of the input vector
Replace NaNs with the number that appears to its left in the row.
Determine Whether an array is empty
Return the first and last character of a string
Given a 4x4 matrix, swap the two middle columns
Generate this matrix
Neither minima nor maxima
longest common substring : Skipped character version
I want eval
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