题目:
题解:
class Solution:def numberOfArithmeticSlices(self, nums: List[int]) -> int:n = len(nums)if n == 1:return 0d, t = nums[0] - nums[1], 0ans = 0# 因为等差数列的长度至少为 3,所以可以从 i=2 开始枚举for i in range(2, n):if nums[i - 1] - nums[i] == d:t += 1else:d = nums[i - 1] - nums[i]t = 0ans += treturn ans