题解 | 最小花费爬楼梯
最小花费爬楼梯
https://www.nowcoder.com/practice/6fe0302a058a4e4a834ee44af88435c7
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# 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可
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# @param cost int整型一维数组
# @return int整型
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class Solution:
def minCostClimbingStairs(self , cost: List[int]) -> int:
# write code here
n = len(cost)
if n<3:
return 0
dp = [0]*(n+1)#注意楼顶下标为n,为第n+1项
dp[0], dp[1] = 0, 0
for i in range(2,n+1):#当前台阶的最小花费
dp[i] = min(dp[i-1]+cost[i-1],dp[i-2]+cost[i-2])
return dp[-1]
