Design a class PendulumS to perform an operation on a word containing alphabets in upper case only…

import java.util.Scanner;

class PendulumS
{
    String wrd;
    String newwrd;

    PendulumS(String k)
    {
        wrd = k;
        newwrd = "";
    }

    int minCharIndex(String str)
    {
        int minIdx = 0;
        char minCh = str.charAt(0);
        for (int i = 1; i < str.length(); i++)
        {
            if (str.charAt(i) < minCh)
            {
                minCh = str.charAt(i);
                minIdx = i;
            }
        }
        return minIdx;
    }

    void arrange()
    {
        String temp = wrd;
        int len = wrd.length();
        for (int i = 0; i < len; i++)
        {
            int idx = minCharIndex(temp);
            char ch = temp.charAt(idx);
            temp = temp.substring(0, idx) + temp.substring(idx + 1);

            if (i == 0)
            {
                newwrd = "" + ch;
            }
            else if (i % 2 == 1)
            {
                newwrd = newwrd + ch; // place to the right
            }
            else
            {
                newwrd = ch + newwrd; // place to the left
            }
        }
    }

    void display()
    {
        System.out.println("Original word: " + wrd);
        System.out.println("Rearranged word: " + newwrd);
    }

    public static void main(String[] args)
    {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a word in uppercase: ");
        String input = sc.next();
        PendulumS obj = new PendulumS(input);
        obj.arrange();
        obj.display();
    }
}