A class Flipgram has been defined to flip the letters of the left and right halves of a…

A class Flipgram has been defined to flip the letters of the left and right halves of a non-heterogram word. If the word has odd number of characters, then the middle letter remains at its own position. A heterogram is a word where no letter appears more than once. Example 1: INPUT : BETTER OUTPUT: TERBET Example 2: INPUT : NEVER OUTPUT: ERVNE Example 3: INPUT : THAN OUTPUT: HETEROGRAM The details of the members of the class are given below: Class name : Flipgram Data member/instance variable: word : to store a word Methods/Member functions: Flipgram(String s) : parameterised constructor to assign word = s boolean ishetero( ) : to return true if word is a heterogram else return false String flip( ) : to interchange the left and right sides of a non-heterogram word and return the resultant word void display( ) : to print the flipped word for a non-heterogram word by invoking the method flip( ). An appropriate message should be printed for a heterogram word Specify the class Flipgram giving the details of the constructor(String), boolean ishetero( ), String flip( ) and void display( ). Define a main( ) function to create an object and call the functions accordingly to enable the task.

class Flipgram
{
    String word;

    Flipgram(String s)
    {
        word = s;
    }

    boolean ishetero()
    {
        for (int i = 0; i < word.length(); i++)
        {
            for (int j = i + 1; j < word.length(); j++)
            {
                if (word.charAt(i) == word.charAt(j))
                    return false;
            }
        }
        return true;
    }

    String flip()
    {
        int len = word.length();
        int half = len / 2;
        String left = word.substring(0, half);
        String right = (len % 2 == 0) ? word.substring(half) : word.substring(half + 1);
        String mid = (len % 2 == 0) ? "" : word.substring(half, half + 1);
        return right + mid + left;
    }

    void display()
    {
        if (ishetero())
            System.out.println("HETEROGRAM");
        else
            System.out.println(flip());
    }

    public static void main(String[] args)
    {
        Flipgram f1 = new Flipgram("BETTER");
        f1.display();
        Flipgram f2 = new Flipgram("NEVER");
        f2.display();
        Flipgram f3 = new Flipgram("THAN");
        f3.display();
    }
}