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[LeetCode] Maximum Product Subarray

题目描述:

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.

解题方案:

转载地址:http://blog.csdn.net/sbitswc/article/details/39546719

最大值的产生:

  1. if A[i] > 0, MaxValue = http://www.mamicode.com/A[i] * MaxValue
  2. if A[i] < 0, MinValue = http://www.mamicode.com/A[i] * MinValue
  3. A[i]

下面是该题代码:

 1 class Solution { 2 public: 3     int maxProduct(int A[], int n) { 4         if (n == 0) {return 0;} 5         if (n == 1) {return A[0];} 6  7         int result = A[0]; 8         int CurMin = A[0]; 9         int CurMax = A[0];10 11         for (int i = 1; i < n; ++i) {12             int temp = CurMin * A[i];13             CurMin = min(A[i], min(temp, CurMax * A[i]));14             CurMax = max(A[i], max(temp, CurMax * A[i]));15             result = max(result, CurMax);16         }17 18         return result;19     }20 };

 

[LeetCode] Maximum Product Subarray