Bubble Sort

import java.util.Arrays;

public class BubbleSort {
    public static void main(String[] args) {
        int[] arr={5,4,3,2,1};
        bubble(arr);
        System.out.println(Arrays.toString(arr));
    }

    static void bubble(int[] arr){
        //run the steps n-1 times
        boolean swapped;
        for(int i=0; i<arr.length; i++){
            swapped = false;
            //for each step ,max item will come at the last respective index
            for(int j=1; j<arr.length-i; j++){

            //swap if the item is smaller than the previous item
             if(arr[j]<arr[j-1]){
                 int temp = arr[j];
                 arr[j] = arr[j-1];
                 arr[j-1] = temp;
                 swapped = true;
             }
            }

            //if you did not swap for a particular value of i , it means the array is sorted hence stop the program
            if(!swapped){
                break;
            }
        }
    }
}