数组里面放入随机数

private static void method() {
		ArrayList<Integer> nums = getArray(COUNT);

		ArrayList<Integer> newNums = new ArrayList<Integer>();
		for (int i = COUNT; i > 0; i--) {
			int num = (int) (Math.random() * i);
			newNums.add(nums.remove(num));
		}

		System.out.println(newNums);
	}

	public static ArrayList<Integer> getArray(int num) {
		ArrayList<Integer> nums = new ArrayList<Integer>();
		for (int i = 0; i < num; i++) {
			nums.add(i + 1);
		}
		return nums;
	}
public static final int COUNT = 9;

　　

- (NSArray *)createNumberArray{
    NSMutableArray *array = [NSMutableArray array];
    for (NSInteger i = 1; i < 10; i++) {
        [array addObject:@(i)];
    }
    for (NSInteger i = 0; i < 9; i++) {
        NSInteger seed = i + arc4random_uniform(9 - i);
        [array exchangeObjectAtIndex:i withObjectAtIndex:seed];
    }
    return array;
}