It looks like I forgot to put in size(x,2) instead of 4. Apparently the test suite didn't check that.
Find the two-word state names
Roll the Dice!
Back to basics 17 - white space
Colon operator of two vectors
Vectors counting by 2
Matrix which contains the values of an other matrix A at the given locations.
Duplicate each element of a vector.
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Find the elements of a matrix according to a defined property.
Remove NaN ?
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