/
main.swift
36 lines (33 loc) · 1.06 KB
/
main.swift
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/*
解题思路:记录有多少个连续的存在0个数 >= 2的区间
*/
class Solution {
func canPlaceFlowers(_ flowerbed: [Int], _ n: Int) -> Bool {
var result = 0;
if flowerbed.count <= 0 {
return false;
}
var continuousZeroNums = 0;
for (index,num) in flowerbed.enumerated(){
if num == 0{
continuousZeroNums += 1;
// 注意如果首个跟最后一个也是0,
if index == 0 {
continuousZeroNums += 1;
}
if index == flowerbed.count - 1{
continuousZeroNums += 1;
if(continuousZeroNums >= 3){
result += (continuousZeroNums - 1) / 2;
}
}
}else{
if(continuousZeroNums >= 3){
result += (continuousZeroNums - 1) / 2;
}
continuousZeroNums = 0;
}
}
return n <= result;
}
}