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LeetCode 3254, Medium. Topics: Array, Sliding Window. View on LeetCode. Generate this problem as a practice environment: tested reference solution, 22 parametrized pytest cases, and a playground notebook:

Problem

You are given an array of integers nums of length n and a positive integer k. The power of an array is defined as:
  • Its maximum element if all of its elements are consecutive and sorted in ascending order.
  • -1 otherwise.
You need to find the power of all subarrays of nums of size k. Return an integer array results of size n - k + 1, where results[i] is the power of nums[i..(i + k - 1)].

Examples

Constraints

  • 1 <= n == nums.length <= 500
  • 1 <= nums[i] <= 10^5
  • 1 <= k <= n

Solution

Reference implementation from solution.py on GitHub, full suite in test_solution.py:

Complexity

Tags

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Last modified on September 7, 2026