Solution: Contains Duplicate II
Explore how to solve the problem of finding duplicate values within a limited index range in an array. Learn to apply the sliding window pattern by maintaining a set to check duplicates efficiently. Understand the approach's time complexity O(n) and space complexity O(min(n, k)) for optimal problem solving.
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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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