Problem with Need For Speed exercise

Programming Java
1

I have the following code, but the tests are not running correctly. Every time I try to run the tests, it returns a timeout error as if there were an infinite loop in my code.

class NeedForSpeed {
    private int speed;
    private int batteryDrain;
    private int distanceDriven = 0;
    private int battery = 100;
    
    public NeedForSpeed(int speed, int batteryDrain) {
        this.speed = speed;
        this.batteryDrain = batteryDrain;
    }

    public boolean batteryDrained() {
        return this.batteryDrain > this.battery;
    }

    public int distanceDriven() {
        return this.distanceDriven;
    }

    public void drive() {
        if(this.batteryDrain < this.battery) {
            this.distanceDriven += this.speed;
            this.battery -= this.batteryDrain;
        }
    }

    public static NeedForSpeed nitro() {
        return new NeedForSpeed(50, 4);
    }
}

class RaceTrack {
    private int distance;
    
    public RaceTrack(int distance) {
        this.distance = distance;
    }

    public boolean tryFinishTrack(NeedForSpeed car) {
        while (car.distanceDriven() < this.distance && !car.batteryDrained()) {
            car.drive();
        }
        return car.distanceDriven() >= this.distance;
    }
}

Does anyone can help me?

2

What happens if you create a car with speed 1 and drain 51 then tell it to drive a track with distance 2?

3

I am having this problem on the JavaScript simple-cipher exercise, which passes all tests on my home system – could there be a problem with the system here?

4

Please create a new thread for a new request. This thread is about Java and Need for Speed. You’re asking about a different exercise on a different language. Please use a new thread. Please include your code and the test failures. Please use a codeblock and not a screenshot.

5

I was not requesting help: mine is already out to mentoring.
Sorry – I misinterpreted this as another exercise on the JavaScript Track, and thought that two such similar results might indicate something happening trackwide.

6

…and this evening the code passes without my having touched it in the interim

7 
if
  batteryDrain = 10
  battery = 10
  
batery is not drained:
  batteryDrained() {
    return batteryDrain > battery;
    // 10 > 10  false
    
loop continues ad infinitum, 
because drive() doesn't update
  drive() {
    if (batteryDrain < battery) {
    // 10 < 10 false
    // do nothing
1 Like
8

Nice catch.