Solution: Contains Duplicate II
Explore how to determine if an array contains duplicate elements within a given index range using the sliding window technique. Understand the use of a set to track elements dynamically, and learn to implement an efficient O(n) time complexity solution that manages space by maintaining a window size up to k.
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We'll cover the following...
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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