Alga_4_3/3

public static long[] planting(Event[] events) {
        TreeSet<Long> erdo = new TreeSet<>();
        for(int i = 0; i < events.length; i++) {
            if(events[i].action.equals("kihajt")) {
                if((erdo.ceiling(events[i].position) == null) && (erdo.floor(events[i].position) == null)) {
                    erdo.add(events[i].position);
                }
                else if(erdo.ceiling(events[i].position) == null) {
                    if(Math.abs(events[i].position - erdo.floor(events[i].position)) >= 250) {
                        erdo.add(events[i].position);
                    }
                } else if(erdo.floor(events[i].position) == null) {
                    if(Math.abs(erdo.ceiling(events[i].position) - events[i].position) >= 250){
                        erdo.add(events[i].position);
                    }
                } else if (Math.abs(erdo.ceiling(events[i].position) - events[i].position) >= 250 &&
                        Math.abs(events[i].position - erdo.floor(events[i].position)) >= 250) {
                    erdo.add(events[i].position);
                }
            } else {
                erdo.remove(events[i].position);
            }
        }
        long[] eredmeny = new long[erdo.size()];
        int i = 0;
        for(Long elem: erdo) {
            eredmeny[i] = elem;
            i++;
        }
        return eredmeny;
    }