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Diffstat (limited to 'adjacent_subarr_detect1.py')
-rw-r--r-- | adjacent_subarr_detect1.py | 37 |
1 files changed, 37 insertions, 0 deletions
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)) |