LeetCode 605 Can Place Flowers (Python)

Posted by 小明MaxMing on December 5, 2020

题目

You have a long flowerbed in which some of the plots are planted, and some are not. However, flowers cannot be planted in adjacent plots.

Given an integer array flowerbed containing 0’s and 1’s, where 0 means empty and 1 means not empty, and an integer n, return if n new flowers can be planted in the flowerbed without violating the no-adjacent-flowers rule.

解题思路

贪心,从左向右遍历,如果能种花,就种,最后查看最多能种多少花,要处理两端的情况

代码

class Solution:
    def canPlaceFlowers(self, flowerbed: List[int], n: int) -> bool:
        count = 0
        flowerbed.extend([0, 0])
        for i in range(len(flowerbed) - 2):
            if flowerbed[i - 1] == flowerbed[i] == flowerbed[i + 1] == 0:
                flowerbed[i] = 1
                count += 1
        return count >= n

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