BubbleSort

package uktc;
import java.util.Arrays;
import java.util.Scanner;


public class zadacha
{

public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);

        System.out.println("Input N/ number/ of elements:");
        int n = scan.nextInt();


        int[] arr = new int[n];



        int i =0;
        do {
            System.out.printf("Please insert the [%d]",i);
            arr[i] = scan.nextInt();
            i++;
    }while (i<n);

        System.out.println("BEFORE SORTING :");
        System.out.println(Arrays.toString(arr));

        BubbleSort(arr);


        System.out.println("AFTER SORTING :");
        System.out.println(Arrays.toString(arr));
 }

        public static void BubbleSort(int[] arr) {
    int BUFF;
    boolean swap;

         do {
             swap = false;
             for(int j = 0; j < arr.length - 1; j++) {
                    if(arr[j]>arr[j+1]) {


                        int buff = arr[j];
                        arr[j] = arr[j+1];
                        arr[j+1] = buff;
                    }
                }

            }while (swap);

    }


}