Practical Coding in Java

//
// MonkeyTrouble.java
//

// This exercise is from CodingBat by Nick Parlante
// https://codingbat.com/prob/p181646

// We have two monkeys, a and b, and the parameters aSmile and
// bSmile indicate if each is smiling. We are in trouble if they
// are both smiling or if neither of them is smiling. Return true
// if we are in trouble.

// monkeyTrouble(true, true) → true
// monkeyTrouble(false, false) → true
// monkeyTrouble(true, false) → false

public class MonkeyTrouble
{
    // The function you want to implement

    public static boolean monkeyTrouble(boolean aSmile, 
                                        boolean bSmile) 
    {
        // Remember that a comparison returns a boolean.
        return aSmile == bSmile;
    }

    // The test function, which takes as input:
    // 1) arguments for the monkeyTrouble() function
    // 2) the expected output from the function

    public static void testMonkeyTrouble(boolean aSmile,
                                         boolean bSmile, 
                                         boolean expected)
    {
        boolean result = monkeyTrouble(aSmile, bSmile);
        
        System.out.print("aSmile: " + aSmile +
                " bSmile: " + bSmile + 
                " expected: " + expected +
                " result: " + result + " ");

        if (result == expected)
            System.out.println("YAY!");
        else
            System.out.println("Boohoo!");
    }

    // Run several unit tests in the main() function.

    public static void main(String[] args)
    {
        testMonkeyTrouble(true, true, true);
        testMonkeyTrouble(false, false, true);
        testMonkeyTrouble(true, false, false);
        testMonkeyTrouble(false, true, false);
    }
}