Delete x value in given vector y.
Exapmle x=5; y=[ 1 2 5 6 74 5 2 5]
result=[1 2 6 74 2]
Times 2 - START HERE
Which doors are open?
Increment a number, given its digits
Omit columns averages from a matrix
Get the length of a given vector
Pointwise multiplication of vectors.
Compare two strings.
Sum positive elements of matrix.
Calculate roots of polynomial given as vector array.
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