题目描述:
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.
解题思路:
这道题说白了就是选两个值中较小的一个\(min(a_i,a_j)\),然后乘以他们之间的间距\((i-j)\)的最大值.最简单的\(O(n^2)\)的遍历。但是我们可以采取贪心的算法,从两端开始不断选择较大的一侧组成新的container。
class Solution: # @return an integer def maxArea(self, height): res = 0 l = len(height) i = 0 j = l-1 while i < j: t = min(height[i], height[j]) * (j-i) if t > res: res = t if height[i] < height[j]: i += 1 else: j -= 1 return res