字符串拆分split

public static void main(String[] args) {
		String s = "A1B2C3D4E5F6G7H8";
		String[] arr1 = s.split("[1-8]");
		String[] arr2 = s.split("[A-H]");//
		System.out.println(Arrays.toString(arr1));//[A, B, C, D, E, F, G, H]
		System.out.println(Arrays.toString(arr2));//[, 1, 2, 3, 4, 5, 6, 7, 8]
		int[] a = new int[8];
		for (int i = 1; i < arr2.length; i++) {
			a[i-1] = Integer.valueOf(arr2[i]);
		}
		System.out.println(Arrays.toString(a));
		
		System.out.println(arr2.length);//9 首个字母也被当做拆分符，所以，它前面有个空字符串
		System.out.println(arr1.length);//8

	}