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Binary Tree Preorder Traversal

Paint House 3

Longest Valid Parentheses

Stack of plates

Evaluate Reverse Polish Notation

March 31, 2023 · 4 min ·  Tags List of tags for the post   array ·  leetcode ·  math ·  rpn ·  stack ·  Last updated: Aug 2, 2025

Maximal Rectangle

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

Reorder List such that i-th element points to n-i-th element

Simplify Path

March 20, 2023 · 4 min ·  Tags List of tags for the post   leetcode ·  stack ·  string ·  Last updated: Aug 2, 2025
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