##題目 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. Example 1: Input: flowerbed = [1,0,0,0,1], n = 1 Output: True
Example 2: Input: flowerbed = [1,0,0,0,1], n = 2 Output: False
Note: 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.
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##代碼
func canPlaceFlowers(_ flowerbed: [Int], _ n: Int) -> Bool {
var count: Int =
var arr = flowerbed
for i in .<arr.count {
if (arr[i] == && (i == || arr[i - ] == ) && (i == arr.count - || arr[i + ] == )) {
arr[i] =
count +=
}
if count >= n {
return true
}
}
return false
}
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轉載于:https://juejin.im/post/5a37793151882512d06073db