The test is wrong, the right answer is y_correct = [2 1 3 2];
Determine if input is odd
Read a column of numbers and interpolate missing data
So many choices
Column norms of a matrix
Swap two numbers
Find the elements of a matrix according to a defined property.
Remove NaN ?
Duplicate each element of a vector.
Create a matrix X, where each column is a shifted copy of the vector v
A quadrant matrix
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