Suppose 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 - they would compete for water and both would die.
Given a flowerbed (represented as an array containing 0 and 1, where 0 means empty and 1 means not empty), and a number n, return if n new flowers can be planted in it without violating the no-adjacent-flowers rule.
Input: flowerbed = [1,0,0,0,1], n = 1 Output: True
Input: flowerbed = [1,0,0,0,1], n = 2 Output: False
- The input array won’t violate no-adjacent-flowers rule.
- The input array size is in the range of [1, 20000].
- n is a non-negative integer which won’t exceed the input array size.
- Loop through the array and check if current, previous and next (and edges) places are 0.
- Set the current place to 1 (plant a flower) and add 1 to the counter
- Check if the counter >= the target count