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Encode and Decode Strings

March 22, 2023 · 2 min ·  Tags List of tags for the post   array ·  design ·  leetcode ·  string ·  Last updated: Aug 2, 2025

Serialize and Deserialize Binary Search Tree BST

Implement Queue using Stacks

Implement stack using queues

March 20, 2023 · 7 min ·  Tags List of tags for the post   design ·  leetcode ·  queue ·  stack ·  Last updated: Aug 2, 2025

Implement Trie

LFU Cache

Design LRU Cache

Find frequency of a word in a book

Binary Search Tree BST Inorder Iterator

Two Sum 3 - Data structure design

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