解題思路：

方法一：暴力

class Solution {public int maxProduct(int[] nums) {int max = Integer.MIN_VALUE;int s = 1;for (int i = 0; i < nums.length; i++) {s = 1;for (int j = i ; j < nums.length; j++) {s *= nums[j];max = Math.max(max, s);}}return max;}
}

方法二：動態規劃

class Solution {public int maxProduct(int[] nums) {int max = Integer.MIN_VALUE, imax = 1, imin = 1;for (int i = 0; i < nums.length; i++) {if (nums[i] < 0) {int tmp = imax;imax = imin;imin = tmp;}imax = Math.max(imax * nums[i], nums[i]);imin = Math.min(imin * nums[i], nums[i]);max = Math.max(max, imax);}return max;}
}