It looks like I forgot to put in size(x,2) instead of 4. Apparently the test suite didn't check that.
Word Counting and Indexing
First N Perfect Squares
Who has power to do everything in this world?
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
A quadrant matrix
Create a matrix X, where each column is a shifted copy of the vector v
Remove NaN ?
Find the elements of a matrix according to a defined property.
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