[NP] Telecomoperators

//june-22 harder one
//killing this brought back my confidence

class CellularNetworkTest {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String name = scanner.nextLine();
        String[] cells = scanner.nextLine().split("\\s+");
        String[] cellIds = new String[cells.length];
        int[] capacities = new int[cells.length];
        for (int i = 0; i < cells.length; ++i) {
            String[] parts = cells[i].split(":");
            cellIds[i] = parts[0];
            capacities[i] = Integer.parseInt(parts[1]);
        }
        CellularNetwork cellularNetwork = new CellularNetwork(name, cellIds, capacities);
        int n = scanner.nextInt();
        scanner.nextLine();
        System.out.println("----- Making calls -----");
        for (int i = 0; i < n; ++i) {
            String line = scanner.nextLine();
            String[] parts = line.split("\\s+");
            try {
                cellularNetwork.makeCall(parts[0], parts[1]);
            } catch (CellFullException e) {
                System.out.println(e.getMessage());
            }
        }
        System.out.println();
        n = scanner.nextInt();
        scanner.nextLine();
        System.out.println("----- Making handovers -----");
        for (int i = 0; i < n; ++i) {
            String line = scanner.nextLine();
            String[] parts = line.split("\\s+");
            try {
                cellularNetwork.handover(parts[0], parts[1], parts[2]);
            } catch (CellFullException e) {
                System.out.println(e.getMessage());
            }
        }
        System.out.println("===== Find numbers =====");
        n = scanner.nextInt();
        scanner.nextLine();
        for (int i = 0; i < n; ++i) {
            String number = scanner.nextLine();
            cellularNetwork.findNumber(number);
        }
        System.out.println("===== Load =====");
        cellularNetwork.load();
        scanner.close();
    }
}

class CellFullException extends Exception{
    public CellFullException(String cellId) {
        super(String.format("CellFullException: {%s}",cellId));
    }
}

class Cell {
    String cellId;
    int capacity;
    List<String> numbers;

    public Cell(String cellId, int capacity) {
        this.cellId = cellId;
        this.capacity = capacity;
        this.numbers = new ArrayList<String>();
    }

    public String getCellId() {
        return cellId;
    }

    public void removeNumber(String number) {
        this.numbers.remove(number);
    }

    public void addNumber(String number) throws CellFullException {
        if(numbers.size()==capacity)
            throw new CellFullException(cellId);
        numbers.add(number);
    }

    public double getPercentOfFilledCapacity(){
        return numbers.size() * 100.0 / capacity;
    }

    public String getNumberOfStars(){
        String stars="";
        for(int i=0;i<(int)getPercentOfFilledCapacity()/10;i++){
            stars+="*";
        }
        return stars;
    }


    @Override
    public String toString() {
        return String.format("ID: %s\n" + "%s %.2f%%", cellId,getNumberOfStars(), getPercentOfFilledCapacity());
    }
}

class CellularNetwork {
    String name;
    Map<String,Cell> cells;
    Map<String,List<String>> cellsPerNumber;

    public CellularNetwork(String name, String[] cellIds, int[] capacities) {
        this.name = name;
        this.cells= new HashMap<>();
        for(int i=0;i<capacities.length;i++){
            cells.putIfAbsent(cellIds[i],new Cell(cellIds[i],capacities[i]));
        }
        this.cellsPerNumber= new HashMap<>();
    }

    public void makeCall(String cellId, String number) throws CellFullException {
        cells.get(cellId).addNumber(number);
        cellsPerNumber.putIfAbsent(number, new ArrayList<>());
        cellsPerNumber.get(number).add(cellId);
    }

    public void handover(String number, String fromCellId, String toCellId) throws CellFullException {
        cells.get(fromCellId).removeNumber(number);
        cells.get(toCellId).addNumber(number);
        if(cellsPerNumber.containsKey(number))
            cellsPerNumber.get(number).add(toCellId);
    }

    public void findNumber(String number) {
        if(!cellsPerNumber.containsKey(number)){
            System.out.println(String.format("Number '%s' not found",number));
            return ;
        }
        System.out.print(String.format("Number '%s' : ",number));
        System.out.println(String.join(" --> ",
                cellsPerNumber.get(number).stream()
                        .map(i->i.toString())
                        .toList()
        ));

    }
    public void load() {
        cells.values().stream().sorted(Comparator.comparing(Cell::getCellId)).forEach(i-> System.out.println(i));
    }
}

//**
Telefonica
cell-0:41 cell-1:39 cell-2:93 cell-3:91 cell-4:62 cell-5:26 cell-6:15 cell-7:49 cell-8:99 cell-9:30 cell-10:60 cell-11:57 cell-12:96
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**//