Function getNeighbors

matrix/remove-islands.js:123–135

(matrix, row, col)

}

function getNeighbors(matrix, row, col) {
  const neighbors = [];

  const numRows = matrix.length;
  const numCols = matrix[row].length;

  if (row - 1 >= 0) neighbors.push([row - 1, col]); //UP
  if (row + 1 < numRows) neighbors.push([row + 1, col]); //DOWN
  if (col - 1 >= 0) neighbors.push([row, col - 1]); //LEFT
  if (col + 1 < numCols) neighbors.push([row, col + 1]); //RIGHT

  return neighbors;
}

const input = [
  [1, 0, 0, 0, 0, 0],