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Delete Duplicate Folders in System

Design a Text Editor

Design Bitset

Dota2 Senate

November 29, 2024 · 6 min ·  Tags List of tags for the post   greedy ·  leetcode ·  queue ·  string ·  Last updated: Aug 2, 2025

Encrypt and Decrypt Strings

Equal Rational Numbers

November 29, 2024 · 9 min ·  Tags List of tags for the post   leetcode ·  math ·  string ·  Last updated: Aug 2, 2025

Existence of a Substring in a String and Its Reverse

November 29, 2024 · 3 min ·  Tags List of tags for the post   hash-table ·  leetcode ·  string ·  Last updated: Aug 2, 2025

Find Beautiful Indices in the Given Array I

Find Beautiful Indices in the Given Array II

Find Maximum Number of String Pairs

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