Solution.py

class Solution:
    def canPlaceFlowers(self, flowerBed, n):
        """
        type flowerBed : List[int], n : int
        rtype : bool
        """

        i = 0
        while n > 0 and i < len(flowerBed):
            if i == 0 and flowerBed[0] == 0:  # for 1st Element
                if len(flowerBed) == 1 or (len(flowerBed) > 1 and flowerBed[1] == 0):
                    n -= 1
                    flowerBed[0] = 1
            elif (
                i == len(flowerBed) - 1 and flowerBed[i] == 0 and flowerBed[i - 1] == 0
            ):  # for last element
                n -= 1
                flowerBed[i] = 1
            elif flowerBed[i] == 0 and flowerBed[i - 1] == 0 and flowerBed[i + 1] == 0:
                n -= 1
                flowerBed[i] = 1
            i += 1

        return n == 0