问题描述：

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.

找最大最小值。

代码：

int maxProduct(int A[], int n) {  //C++
        int size = n;
		if(size == 1)
			return A[0];
			
		vector<int> Max(size);
	    vector<int> Min(size);
	    
	    Max[0] = A[0];
	    Min[0] = A[0];
	    for(int i=1; i<size; i++){
	        Max[i] = max(max(Max[i-1]*A[i],Min[i-1]*A[i]),A[i]);
	        Min[i] = min(min(Max[i-1]*A[i],Min[i-1]*A[i]),A[i]);
	    }
	    int result = Max[0];
	    for(int i=0; i<size; i++)
	        if(Max[i]>result)
	            result = Max[i];
	    return result;
    }

[leetcode] 152 Maximum Product Subarray