This problem has been polished along with an enhanced test suite.
nice moderate problem
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Remove element(s) from cell array
Perfect Square or not
Replace Nonzero Numbers with 1
Sum positive elements of matrix.
Solve expression I
Solve expression II
Opposite task convert binary numbers array into array of decimal numbers.
Set x value to each odd index of vector y.
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