Givennnon-negative integersa1,a2, ...,an, where each represents a point at coordinate (i,ai).nvertical lines are drawn such that the two endpoints of lineiis at (i,ai) and (i, 0). Find two lines, which together with x-axis forms a container, such that the container contains the most water.
Note: You may not slant the container andnis at least 2.
分析：
题目大意是要找出组成容器的最大容量，容量的大小计算公式： area = (H[j]-H[i]) * min(H[i], H[j]) (i<=j)
方法：容量大小取决于两根线的距离［Ｘ］和两根线当中小的那个min。
可以考虑将 [X] 初始化为最大值，然后不断递减，当固定[X]时，min越大，容量也越大
