You are given an integer array height of length n. There are n vertical lines drawn such that the two endpoints of the i-th line are (i, 0) and (i, height[i]).
Find two lines that together with the x-axis form a container, such that the container contains the most water.
Return the maximum amount of water a container can store.
Input: height = [1,8,6,2,5,4,8,3,7]
Output: 49
Explanation: The max area is between index 1 and 8.
Input: height = [1,1]
Output: 1
n == height.length2 <= n <= 10^50 <= height[i] <= 10^4