Leetcode Problem 2817. Minimum Absolute Difference Between Elements With Constraint

2817. Minimum Absolute Difference Between Elements With Constraint

Leetcode Solutions

Sliding Window with Multiset and Lower Bound

  1. Initialize a multiset to store the elements of the sliding window.
  2. Initialize a variable result to store the minimum absolute difference, initially set to a large value.
  3. Iterate through the array starting from index x and insert the elements into the multiset.
  4. Iterate through the array from the beginning to size - x: a. Use lower_bound to find the closest element in the multiset to the current element. b. Update result with the minimum of the current result and the absolute difference between the current element and the lower_bound result. c. If there is an element before the lower_bound result, update result with the minimum of the current result and the absolute difference between the current element and this previous element. d. Remove the element that is x indices ahead of the current index from the multiset.
  5. Return result as the minimum absolute difference.
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Brute Force with Sorting

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