FRQ 2 - Sign Class

2 min read

FRQ 2: Sign Class
- Key Rules:
- Code Runner Challenge
Expected Output

FRQ 2: Sign Class

This question involves methods that distribute text across lines of an electronic sign. The Sign class contains:

A constructor with two parameters: a String message and an int width
numberOfLines() - returns the number of lines needed to display the message
getLines() - returns the message broken into lines separated by semicolons

Key Rules:

The message is split among lines without regard to spaces or punctuation
Only the last line may contain fewer characters than the width
getLines() returns null if the message is empty

Code Runner Challenge

FRQ 2 - Sign Class Challenge

View IPYNB Source

// CODE_RUNNER: FRQ 2 - Sign Class Challenge

class Sign {
    private String message;
    private int width;

    // TODO: Write the constructor
    public Sign(String message, int width) {
        // Your code here
    }

    // TODO: Returns the number of lines needed
    public int numberOfLines() {
        // Your code here
        return 0;
    }

    // TODO: Returns message split by semicolons, null if empty
    public String getLines() {
        // Your code here
        return null;
    }
}

class Main {
    public static void main(String[] args) {
        Sign sign1 = new Sign("ABC222DE", 3);
        System.out.println("sign1 numberOfLines(): " + sign1.numberOfLines()); // Expected: 3
        System.out.println("sign1 getLines(): " + sign1.getLines()); // Expected: ABC;222;DE

        Sign sign2 = new Sign("ABCD", 10);
        System.out.println("sign2 numberOfLines(): " + sign2.numberOfLines()); // Expected: 1
        System.out.println("sign2 getLines(): " + sign2.getLines()); // Expected: ABCD

        Sign sign3 = new Sign("ABCDEF", 6);
        System.out.println("sign3 numberOfLines(): " + sign3.numberOfLines()); // Expected: 1
        System.out.println("sign3 getLines(): " + sign3.getLines()); // Expected: ABCDEF

        Sign sign4 = new Sign("", 4);
        System.out.println("sign4 numberOfLines(): " + sign4.numberOfLines()); // Expected: 0
        System.out.println("sign4 getLines(): " + sign4.getLines()); // Expected: null

        Sign sign5 = new Sign("AB_CD_EF", 2);
        System.out.println("sign5 numberOfLines(): " + sign5.numberOfLines()); // Expected: 4
        System.out.println("sign5 getLines(): " + sign5.getLines()); // Expected: AB;_C;D_;EF

        Sign sign6 = new Sign("Everything on sale, please come in", 15);
        System.out.println("sign6 numberOfLines(): " + sign6.numberOfLines()); // Expected: 3
        System.out.println("sign6 getLines(): " + sign6.getLines()); // Expected: Everything on s;ale, please com;e in
    }
}

Main.main(null);

Lines: 1 Characters: 0

Output

Click "Run" in code control panel to see output ...

Expected Output

If the implementation is correct, running the code should produce:

sign1 numberOfLines(): 3
sign1 getLines(): ABC222DE
sign2 numberOfLines(): 1
sign2 getLines(): ABCD
sign3 numberOfLines(): 1
sign3 getLines(): ABCDEF
sign4 numberOfLines(): 0
sign4 getLines(): null
sign5 numberOfLines(): 4
sign5 getLines(): AB_CD_EF
sign6 numberOfLines(): 3
sign6 getLines(): Everything on sale, please come in

Computer Science A

FRQ 2 - Sign Class

FRQ 2: Sign Class

Key Rules:

Code Runner Challenge

Expected Output

Course Timeline