/**冒泡排序*/
import java.util.Arrays;
public class Maopao {
	public static void main(String[] args){
		int[] a = {4,2,5,7,1};
		int x =0;
		for(int i=0;ia[j+1]){
					x=a[j];
					a[j]=a[j+1];
					a[j+1]=x;
				}
			}
		}
		System.out.println(Arrays.toString(a));
	}
}

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