I need algorithm for this code

Part III - Brute force attack: import java.utituscanner; public class Brute Force { public static void main(String[] args) { Scanner ss = new Scanner (System.in); int i, j, l, k = 25, key = 0, flag = 0, index = 0, kexvali String ptz char[] ct1 = new char[10]; char[] pti new char[10]; char temp; System.out.printin ("ENTER PLAIN TEXT"); pt = sc.next(); System.out.println("ENTER KEY VALUE :"); key = sc.nextInt(); for (i = 0; i 0) { pti[i] (char) ((kevat $26) + 251 } else if (flag = 1) { pti[i] (char) ((26 + kexat) + 25: } } System.outusrint(" " + "DECRYPTED DATA: "); for (i = 0; i