private List<Integer> getLongestLayerLine() { int len = 0; int index = 0; Helix helix = helixLayers.getByLargestContacts(); List<List<Integer>> layerLines = helix.getLayerLines(); for (int i = 0; i < layerLines.size(); i++) { if (layerLines.get(i).size() > len) { len = layerLines.get(i).size(); index = i; } } return layerLines.get(index); }