双指针,右指针前移 s *= nums[r] 当 s >= k 时,左指针前移直到条件满足,结果为满足条件区间长度的累加
#
# 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
#
#
# @param nums int整型一维数组
# @param k int整型
# @return int整型
#
class Solution:
def subarrayCnt(self , nums: List[int], k: int) -> int:
# write code here
l = r = 0
n = len(nums)
s = 1
res = 0
while r < n:
s *= nums[r]
while l <= r and s >= k:
s //= nums[l]
l += 1
res += r - l + 1
r += 1
return res