LeetCode刷题【Array】 Can Place Flowers

【题目】

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 = 1Output: True

Example 2:

Input: flowerbed = [1,0,0,0,1], n = 2Output: False

Note:

1. The input array won't violate no-adjacent-flowers rule.
2. The input array size is in the range of [1, 20000].
3. n is a non-negative integer which won't exceed the input array size.

【解决办法】

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

【参考】

https://leetcode.com/problems/can-place-flowers/#/description