From 000be985481665195260d7e0c20c76e1607c339b Mon Sep 17 00:00:00 2001 From: Jack Sangdahl Date: Mon, 13 Oct 2025 21:28:30 -0600 Subject: 3349. adjacent increasing subarrays detectiong 1 --- adjacent_subarr_detect1.py | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 adjacent_subarr_detect1.py (limited to 'adjacent_subarr_detect1.py') diff --git a/adjacent_subarr_detect1.py b/adjacent_subarr_detect1.py new file mode 100644 index 0000000..57bbddf --- /dev/null +++ b/adjacent_subarr_detect1.py @@ -0,0 +1,37 @@ +# 3349. Adjacent Increasing Subarrays Detection I + +""" +given an array 'nums' of 'n' integers and an integer 'k', determine whther +there exist two adjacent subarrays of length 'k' such that both subarrays are +strictly increasing. specifically, check if there are two subarrays starting +at indices 'a' and 'b' ('a < b') where both subarrays 'nums[a..a + k - 1]' +and 'nums[b..b + k - 1]' are strictly increasing, and the subarrays must be +adjacent, meaning 'b = a + k'. return true if it is possible to find two such +subarrays and 'false' otherwise. +""" + + +class Solution(object): + def hasIncreasingSubarrays(self, nums, k): + """ + :type nums: List[int] + :type k: int + :rtype: bool + """ + inc, prev, max_len = 1, 0, 0 + for i in range(1, len(nums)): + if nums[i] > nums[i - 1]: + inc += 1 + else: + prev = inc + inc = 1 + max_len = max(max_len, max(inc >> 1, min(prev, inc))) + if max_len >= k: + return True + return False + + +if __name__ == "__main__": + obj = Solution() + print(obj.hasIncreasingSubarrays(nums=[2, 5, 7, 8, 9, 2, 3, 4, 3, 1], k=3)) + print(obj.hasIncreasingSubarrays(nums=[1, 2, 3, 4, 4, 4, 4, 5, 6, 7], k=5)) -- cgit v1.2.3