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.

Example

Input: (flowerbed = [1, 0, 0, 0, 1]), (n = 1);
Output: true;

Solution

/**
 * @param {number[]} flowerbed
 * @param {number} n
 * @return {boolean}
 */
var canPlaceFlowers = function (flowerbed, n) {
  // Loop through flowerbeds and check if there is a 0 and the previous and next are not 1
  for (let i = 0; i < flowerbed.length && n !== 0; i++) {
    if (
      // Check if the current flowerbed is 0 and the previous and next are not 1
      flowerbed[i] === 0 &&
      // Check if the previous flowerbed is not 1
      flowerbed[i - 1] !== 1 &&
      // Check if the next flowerbed is not 1
      flowerbed[i + 1] !== 1
    ) {
      n--;
      i++;
    }
  }
  return n === 0;
};