Solution: Contains Duplicate II
Explore how to identify duplicates within a distance k in an integer array using the sliding window technique. Learn to maintain a dynamic set to track elements efficiently, implement the solution, and understand its time and space complexity for optimal coding interview performance.
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Statement
You are given an integer array, nums, and an integer k. Determine whether two distinct indices, i and j, are in the array, such that nums[i] == nums[j] and the absolute difference between i and j is at most k. Return TRUE if such indices exist; otherwise, return FALSE.
Constraints:
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