Goal: Simulate a single day at the feeder with numBirds birds or possibly a bear.

• There is a 5% chance of a bear: the feeder is emptied.
• Otherwise (95% of the time), each bird eats the same random amount between 10 and 50 grams inclusive.
• If birds want more food than is available, they simply empty the feeder.

public void simulateOneDay(int numBirds)
{
    // 5% chance that a bear comes and empties the feeder
    double r = Math.random();
    if (r < 0.05)
    {
        currentFood = 0;
    }
    else
    {
        // Normal conditions: each bird eats between 10 and 50 grams (inclusive)
        int gramsPerBird = (int) (Math.random() * 41) + 10;
        int totalEaten = gramsPerBird * numBirds;

        if (totalEaten >= currentFood)
        {
            // Birds eat all remaining food
            currentFood = 0;
        }
        else
        {
            // Some food remains
            currentFood -= totalEaten;
        }
    }
}

Why this earns full credit:

• Correct 5% vs 95% branching based on Math.random().
• Correct integer range for bird consumption (10–50 inclusive).
• Correct update logic for currentFood, including emptying the feeder when demand exceeds supply.
• No modification of parameters or use of disallowed library methods.

Goal: Simulate up to numDays days, each with numBirds birds or a bear, and return the number of days on which food was actually found at the feeder.

• Each simulated day with food uses simulateOneDay.
• If the feeder ever reaches 0 grams, the simulation stops early (later days cannot have food).
• If currentFood is 0 at the start, the method returns 0 (no day has food).

public int simulateManyDays(int numBirds, int numDays)
{
    int daysWithFood = 0;

    int day = 0;
    // Continue while we still have days left and there is food to be found
    while (day < numDays && currentFood > 0)
    {
        simulateOneDay(numBirds);
        daysWithFood++;
        day++;
    }

    return daysWithFood;
}

Why this earns full credit:

• Uses simulateOneDay exactly as specified (no reimplementation of its logic).
• Stops early when currentFood becomes 0, matching the examples.
• Counts only days on which there was food at the start of the day.
• Returns the correct count in all of the sample scenarios from the prompt.