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Handle cards, islands, Trie, median

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These problems evaluate proficiency in core data structures and algorithmic problem-solving, covering grouping/counting techniques, grid-based island detection, trie (prefix tree) design, and streaming median computation within the domain of data structures and algorithms.

Question

LeetCode 914. X of a Kind in a Deck of Cards LeetCode 694. Number of Distinct Islands LeetCode 208. Implement Trie (Prefix Tree) LeetCode 295. Find Median from Data Stream

https://leetcode.com/problems/x-of-a-kind-in-a-deck-of-cards/description/ https://leetcode.com/problems/number-of-distinct-islands/description/ https://leetcode.com/problems/implement-trie-prefix-tree/description/ https://leetcode.com/problems/find-median-from-data-stream/description/