extractMatrixColumn=(m,c)=>m.map(r=>r[c])
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// [DAY 22] score: 41

/*
** javascriptmas golf rules:
** - the original test suite must pass and not be modified
** - the solution must generally work (edge cases aren't important unless stated in the problem)
** - each character in the code above counts as a stroke (including whitespace)
** - lowest score wins
*/

/**
* Test Suite 
*/
describe('extractMatrixColumn()', () => {
    it('returns largest positive integer possible for digit count', () => {
        // arrange
        const matrix = [[1, 1, 1, 2], [0, 5, 0, 4], [2, 1, 3, 6]];
        const column = 2;
        
        // act
        const result = extractMatrixColumn(matrix, column);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toEqual([1, 0, 3]);
    });
});