Maximum Product Subarray

Find the contiguous subarray within an array (containing at least one number) which has the largest product.

For example, given the array [2,3,-2,4],
the contiguous subarray [2,3] has the largest product = 6.

 

 1 public class Solution {
 2     public int maxProduct(int[] A) {
 3         if(A == null || A.length == 0) return 0;
 4         int result = A[0]; 
 5         int max = A[0];
 6         int min = A[0];
 7         for(int i = 1; i < A.length; i ++){
 8             int first = A[i] * max;
 9             int second= A[i] * min;
10             max = Math.max(Math.max(first, second), A[i]);
11             min = Math.min(Math.min(first, second), A[i]);
12             result = Math.max(result, max);
13         }
14         return result;
15     }
16 }

 

posted on 2014-10-24 09:40  Step-BY-Step  阅读(113)  评论(0)  编辑  收藏  举报

导航