605. Can Place Flowers

class Solution {
    public boolean canPlaceFlowers(int[] flowerbed, int n) {
        if(flowerbed.length == 1 && flowerbed[0] == 0) n--;
        for(int i = 0; i < flowerbed.length; i++){
            if(i ==0 && flowerbed[i] == 0 && i+1 <  flowerbed.length && flowerbed[i+1] == 0){
                flowerbed[i] = 1;
                n--;
            }else if( i == flowerbed.length -1 && 
                     flowerbed[i] == 0 && i-1 >= 0 &&
                     flowerbed[i-1] == 0){
            flowerbed[i] = 1;
                n--;
            }
            else if(flowerbed[i] == 0  &&
                    i-1 >= 0 &&
                    flowerbed[i-1] == 0  &&
                    i+1 <  flowerbed.length &&
                    flowerbed[i+1] == 0){
                flowerbed[i] = 1;
                n--;
            } 
        }
        if(n <= 0) return true;
        else return false;
    }
}