The ordering of roots in test case:
need to make it irrelevant (use set)
or sort in particular order (use sort)
Is my wife right? Now with even more wrong husband
Return unique values without sorting
Sum the Digits of a Number
Find out total non zero element of matrix
Determine if input is divisible by three.
Matlab Basics II - squares
Matlab Basics II - Determine if an array has a 3rd dimension
Matlab Basics II - Max & Index of Max
Matlab Basics - Convert a row vector to a column vector
Replace every 3rd element in a vector with 4
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