public ListNode deleteDuplicates(ListNode a) {
ListNode temp = a;
LinkedHashMap<Integer, Integer> map = new LinkedHashMap<Integer, Integer>();
int i = 0;
while (temp != null) {
if (map.get(temp.val) == null) {
map.put(temp.val, 1);
} else {
map.put(temp.val, map.get(temp.val) + 1);
}
temp = temp.next;
}
System.out.println(map);
Iterator<Integer> it = map.keySet().iterator();
ListNode root = null;
ListNode root1 = null;
while (it.hasNext()) {
int x = it.next();
if (map.get(x) == 1) {
if (root == null) {
root = new ListNode(x);
root1 = root;
} else {
ListNode node = new ListNode(x);
root1.next = node;
root1 = node;
}
}
}
return root;
}
public IChannelInfo channelData(
String channelName, String userName, InetSocketAddress userAddress) {
// System.out.println("channelName channel:"+channelName+" user:"******"
// addr:"+userAddress);
ChannelInfo channel = channelsCache.get(channelName);
if (channel == null) {
synchronized (channels) {
channel = channels.get(channelName);
if (channel == null) {
channel = new ChannelInfo(channelName);
channels.put(channelName, channel);
updateChannelsCache();
ServerLogger.getInstance().channelCreated(channelName);
}
}
}
boolean updated = channel.userData(userName, userAddress);
if (updated) {
ServerLogger.getInstance().channelJoined(channelName, userName, userAddress);
}
return channel;
}