Part (a)

Write the getCubeTosses method that fills an array with random cube tosses.

Solution

public static int[] getCubeTosses(NumberCube cube, int numTosses)
{
    int[] tosses = new int[numTosses];
    for (int i = 0; i < numTosses; i++)
    {
        tosses[i] = cube.toss();
    }
    return tosses;
}

Part (b)

Write the getLongestRun method that finds the starting index of the longest run of consecutive equal values.

Solution

public static int getLongestRun(int[] values)
{
    int maxRunStart = -1;
    int maxRunLength = 0;
    int currentStart = 0;
    int currentLength = 1;
    
    for (int i = 1; i < values.length; i++)
    {
        if (values[i] == values[i - 1])
        {
            currentLength++;
        }
        else
        {
            if (currentLength > 1 && currentLength > maxRunLength)
            {
                maxRunStart = currentStart;
                maxRunLength = currentLength;
            }
            currentStart = i;
            currentLength = 1;
        }
    }
    
    // Check last run
    if (currentLength > 1 && currentLength > maxRunLength)
    {
        maxRunStart = currentStart;
    }
    
    return maxRunStart;
}

Key Concepts

Common Mistakes