public class BubbleSort{	public static void main(String[] args) {		int arr[] = {6,2,78,53,19,40};		for(int i : arr){			System.out.print(i + " ");		}		System.out.println();				for(int i = 0; i < arr.length; i++){			for(int j = 0; j < arr.length-1-i; j++){				if(arr[j] > arr[j+1]){					int temp = arr[j];					arr[j] = arr[j+1];					arr[j+1] = temp;				}			}			}		for(int i : arr){			System.out.print(i + " ");		}	}}复制代码