Chapter 5.5, Problem 29SCP

Explanation of Solution

Given program:

//definition of "mystery" method

public static int mystery (Scanner console)

{

    //declare the variable and set the value

    int prev = 0;

    //declare the variable and set the value

    int count = 0;

    //get the value

    int next = console.nextInt();

    //Point A

    //check "next" not equal to 0

    while (next != 0)

    {

        //Point B

        //check "next" is equal to "prev"

        if (next == prev)

        {

            //Point C

            //increment the value

            count++;

        }

        //set the values

        prev = next;

        next = console.nextInt();

        //Point D

    }

    //Point E

    //return the value

    return count;

}

Categorization of each point:

	next == 0	prev == 0	next == prev
Point A	Sometimes	Always	Sometimes
Point B	Never	Sometimes	Sometimes
Point C	Never	Never	Always
Point D	Sometimes	Never	Sometimes
Point E	Always	Sometimes	sometimes

Explanation:

• The variable “console” is the parameter and get their values from the call to the method...