private void maxWidthTreeHelper(
TreeNode node, int depth, Map<Integer, Integer> map, ResultType rt) {
for (TreeNode next : node.nextList) {
if (next == null) {
continue;
} else {
if (map.containsKey(depth)) {
map.put(depth, map.get(depth) + 1);
} else {
map.put(depth, 1);
}
rt.max = Math.max(rt.max, map.get(depth));
maxWidthTreeHelper(next, depth + 1, map, rt);
}
}
}
