C++:

1 class Solution { 2 public: 3     int maxArea(vector
     
      & height) { 4         int left = 0 ; 5         int right = height.size() - 1 ; 6         int res = 0 ; 7         while(left < right){ 8             res = max(res,min(height[left],height[right])*(right-left)) ; 9             if (height[left] < height[right]){10                 left++ ;11             }else{12                 right-- ;13             }14         }15         return res ;16     }17 };