Solution: Contains Duplicate II
Understand how to apply the sliding window pattern to solve the Contains Duplicate II problem by tracking elements within a fixed range. Learn to implement an O(n) time and space-efficient approach that maintains a set of current elements to detect duplicates within k indices.
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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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