题目：

题解：

class Solution {public int rob(int[] nums) {if (nums == null || nums.length == 0) {return 0;}int length = nums.length;if (length == 1) {return nums[0];}int first = nums[0], second = Math.max(nums[0], nums[1]);for (int i = 2; i < length; i++) {int temp = second;second = Math.max(first + nums[i], second);first = temp;}return second;}
}