public static int[] getArr(int n){
		int [] array = new int[n];
		Random random  = new Random();
		System.out.println("*******************unsort array  NO:"+n+"************");
		for(int i =0; i < n;i++){
			array[i] = random.nextInt(100);
			System.out.print(array[i]+" ");
		}
		System.out.println();
		return array;
	}