Stacks

Problems based on the Stack data structure and various problem solving patterns

SDE Sheet problems on Stacks

Completion Status	Problems on Stack/Queues	Explanation	Solution
🔃	Implement stack using array	Brute, Better & Optimal Approaches	Java Soultion
🔃	Implement Queue using array	Brute, Better & Optimal Approaches	Java Soultion
🔃	Implement Stack using Linked List	Brute, Better & Optimal Approaches	Java Soultion
🔃	Implement Queue using Linked List	Brute, Better & Optimal Approaches	Java Soultion
🔃	BFS of graph	Brute, Better & Optimal Approaches	Java Soultion
🔃	Implement Stack using Queues	Brute, Better & Optimal Approaches	Java Soultion
🔃	Implement Queue using Stacks	Brute, Better & Optimal Approaches	Java Soultion
🔃	Valid Parentheses	Brute, Better & Optimal Approaches	Java Soultion
🔃	Next Greater Element	Brute, Better & Optimal Approaches	Java Soultion

Completion Status	Miscellaneous Problems	Explanation	Solution
🔃	Nearest Smaller Element	Brute, Better & Optimal Approaches	Java Soultion
🔃	LRU Cache	Brute, Better & Optimal Approaches	Java Soultion
🔃	Largest Rectangle in Histogram	Brute, Better & Optimal Approaches	Java Soultion
🔃	Sliding Window Maximum	Brute, Better & Optimal Approaches	Java Soultion
🔃	Min Stack	Brute, Better & Optimal Approaches	Java Soultion
🔃	Rotting Oranges	Brute, Better & Optimal Approaches	Java Soultion