java 冒泡排序

int [] a= {23,1,41,3,5,123,451,44,21};
		
		for(int i =0;i<a.length;i++){
			
			for(int j = 0;j<a.length-1;j++){
				
				if(a[j]>a[j+1]){
					int num = a[j];
					a[j]=a[j+1];
					a[j+1]=num;
				}
			}

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遍历输出后：