Hash Table Mastery List

🧩 Hash Table Mastery List

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✅ Easy

#	Title	Link	Done
1	Two Sum	🔗 LeetCode	☐
217	Contains Duplicate	🔗 LeetCode	☐
242	Valid Anagram	🔗 LeetCode	☐
349	Intersection of Two Arrays	🔗 LeetCode	☐
202	Happy Number	🔗 LeetCode	☐

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🟡 Medium

#	Title	Link	Done
3	Longest Substring Without Repeating Characters	🔗 LeetCode	☐
49	Group Anagrams	🔗 LeetCode	☐
347	Top K Frequent Elements	🔗 LeetCode	☐
36	Valid Sudoku	🔗 LeetCode	☐
128	Longest Consecutive Sequence	🔗 LeetCode	☐
219	Contains Duplicate II	🔗 LeetCode	☐
560	Subarray Sum Equals K	🔗 LeetCode	☐
451	Sort Characters By Frequency	🔗 LeetCode	☐
981	Time Based Key-Value Store	🔗 LeetCode	☐
49	Group Anagrams	🔗 LeetCode	☐

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🟥 Hard

#	Title	Link	Done
76	Minimum Window Substring	🔗 LeetCode	☐
895	Maximum Frequency Stack	🔗 LeetCode	☐
30	Substring with Concatenation of All Words	🔗 LeetCode	☐
432	All O`one Data Structure	🔗 LeetCode	☐

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