JavaAlgorithms/Others/TowerOfHanoi.java

package Others;

import java.util.Scanner;

class TowerOfHanoi {
    public static void shift(int n, String startPole, String intermediatePole, String endPole) {
        // if n becomes zero the program returns thus ending the loop.
        if (n == 0) {
            return;
        }


        // Shift function is called in recursion for swapping the n-1 disc from the startPole to the intermediatePole
        shift(n - 1, startPole, endPole, intermediatePole);
        System.out.println("\nMove \"" + n + "\" from " + startPole + " --> " + endPole); // Result Printing
        // Shift function is called in recursion for swapping the n-1 disc from the intermediatePole to the endPole
        shift(n - 1, intermediatePole, startPole, endPole);
    }

    public static void main(String[] args) {
        System.out.print("Enter number of discs on Pole 1: ");
        Scanner scanner = new Scanner(System.in);
        int numberOfDiscs = scanner.nextInt(); //input of number of discs on pole 1
        shift(numberOfDiscs, "Pole1", "Pole2", "Pole3"); //Shift function called
    }
}