function extractMatrixColumn(matrix, column) {
secondColumn = [];
for (let i = 0; i < matrix.length; i++){
for (let j = 0; j < matrix[i].length; j++){
if (j == column){
secondColumn.push(matrix[i][j]);
}
}
}
return secondColumn;
}
/**
* 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]);
});
});