import java.util.Random;
public class Number9
{
    /**
     * This method counts how many random numbers between 1 and 100 (inclusive) are
     * needed to get them to sum to at least 100.
     * @return The number of random integers between 1 and 100 (inclusive) used.
     */
    public static int numRandNumsTo100()
    {
        // declare a variable of type Random and intialize it to the output
        // of the default constructor for the Random class which is an object
        // the ouputs random numbers when you call one of its methods
        Random randNumGen = new Random();
        int sum = 0;
        int count = 0;
        int randomInt = 0;
        
        // repeatedly select a random number and add to sum until bigger or equal to 100
        while (sum < 100)
        {
            // get the next random integer between 0 and 100 (exclusive) and add 1
            randomInt = randNumGen.nextInt(100) + 1;
            
            // add the random number to the sum and add 1 to the count
            sum = sum + randomInt;
            //alternatively count = count + 1
            count++;
        }
        
        // we know the sum is now >= 100 and the body of the while loop ran count times
        // so count random numbers were used and we want to RETURN this information to 
        // whoever called this method.  They may not want it printed to the screen!
        return count;
    }
}