如何找到一个重复的数组?(c++)

如何在数组中找到重复项?最大值是3 Clients。当我有2个Client时，它用传入的Client s更新现有的Client s，但是当我有3个Client时，它停止用传入的Client s更新现有的Client s。服务器仍然接收数据，Client仍然发送数据，但它不更新数据。

我在这里看过一些关于数组中重复的帖子，但我无法理解它们。

我认为这与j < 3或i < 3有关，但我不太确定。如何正确地检测和删除重复项?

  //Initialize Client
  Client clients[3]; //Max of 3 clients
  initClient(clients);

  while (1){
    for(int i = 0; i < 3; i++) {//Existing Client
        for(int j = i; j < 3; j++) {//Incoming Client
            if(j != i) {
                if (clients[i].port == clients[j].port){ //If incoming port has the same port as existing, then update 
                    clients[i].x = clients[j].x;
                    clients[i].y = clients[j].y;
                    clients[i].channel = clients[j].channel;
                    clients[i].data = clients[j].data;
                    clients[i].len = clients[j].len;
                    clients[i].maxlen = clients[j].maxlen;
                    clients[i].status = clients[j].status;
                    clients[i].host = clients[j].host;
                    clients[i].port = clients[j].port;
                    clients[i].address = clients[j].address;
                    clients[i].present = clients[j].present;
                    //Remove the incoming client
                    clients[j].present = false;
                    clients[j].alive = false;
                    objectCount2--;
                }
            }
        }
    }
   }