11. Container With Most Water

Given n non-negative integers a1, a2, ..., an, where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is 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 and n is at least 2.水池问题两个index一个指向数组头一个指向数组尾，L的高度小于R的高度，则L向后一个位置每次移动求出面积，并保留最大面积class Solution(object):
def maxArea(self, height):
"""
:type height: List[int]
:rtype: int
"""
ret, l, r = 0, 0, len(height)-1
while l != r:
ret = max(ret, min(height[l], height[r]) * (r-l))
if height[l] < height[r]:
l += 1
else:
r -= 1
return ret