You will be given a cell array of nx2 matrices. Choose one row from each matrix. These are the ordered pairs that will be placed in a line like this.
{[1 2 [4 5 [0 4
3 5 2 4 3 2
1 5] 5 1] 5 3]}
Choices might be: [1 2 3]
yields: [1 2][2 4][5 3]
or: abs(2-2) + abs(4-5)
or: 0 + 1
or: 1
You are trying to minimize the score, the absolute difference of the sum of the difference at the intersections.
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this isn't a big deal, but you have inconsistent inputs for your test cases. cases 1 & 3 are 'row vector' cell arrays whereas case 2 is a 'column vector' cell array.
It would be good to amend the Test Suite in the following regards: (1) Add "%%" to the beginning of the first test case, so that Cody interprets it as intended. (2) Include more test cases: currently the twelve smallest 'correct' submissions are all hard-coded cheats. (3) Include test cases in which the minimum score is not zero. (4) Include test cases in which the number of dominoes to be placed "in a line" is not three. —DIV
And (5) Include test cases in which for a particular position there are more than 9 candidate dominoes available.