x - 2y + 3z = a
2x + y + z = 4
-3x + 2y - 2z = -10
Additional test cases were added along with an improved solution-checking assertion.
Back to basics 1 - Saving
Basic arrays operations.
Dimensions of a rectangle
Replace values under a limit
Find Adjacency Matrix
Return ! if array element starts with a certain letter. Otherwise return ?
Find the sum of the negative elements under the main diagonal.
Return the length of the longest word in the string.
Calculate the centroid of a triangle
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