原題鏈接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.
image
Example:
Input: [1,8,6,2,5,4,8,3,7]
Output: 49
解題思路：雙指針
func maxArea(height []int) int {
res := 0
l := 0
r := len(height) - 1
for l < r {
h := height[l]
if height[l] > height[r] {
h = height[r]
}
if res < h*(r-l) {
res = h * (r - l)
}
if height[l] < height[r] {
l++
} else {
r--
}
}
return res
}
