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37 docs tagged with "stack"

Add Two Numbers II

LeetCode 445 | Difficulty: Medium

Asteroid Collision

LeetCode 735 | Difficulty: Medium

Baseball Game

LeetCode 682 | Difficulty: Easy

Basic Calculator

LeetCode 224 | Difficulty: Hard

Basic Calculator II

LeetCode 227 | Difficulty: Medium

Binary Search Tree Iterator

LeetCode 173 | Difficulty: Medium

Binary Tree Inorder Traversal

LeetCode 94 | Difficulty: Easy

Binary Tree Inorder Traversal

LeetCode 94 | Difficulty: Easy

Binary Tree Postorder Traversal

LeetCode 145 | Difficulty: Easy

Binary Tree Preorder Traversal

LeetCode 144 | Difficulty: Easy

Crawler Log Folder

LeetCode 1720 | Difficulty: Easy

Daily Temperatures

LeetCode 739 | Difficulty: Medium

Decode String

LeetCode 394 | Difficulty: Medium

Evaluate Reverse Polish Notation

LeetCode 150 | Difficulty: Medium

Final Prices With a Special Discount in a Shop

LeetCode 1570 | Difficulty: Easy

Flatten Binary Tree to Linked List

LeetCode 114 | Difficulty: Medium

Implement Queue using Stacks

LeetCode 232 | Difficulty: Easy

Implement Stack using Queues

LeetCode 225 | Difficulty: Easy

Largest Rectangle in Histogram

LeetCode 84 | Difficulty: Hard

Longest Valid Parentheses

LeetCode 32 | Difficulty: Hard

Maximal Rectangle

LeetCode 85 | Difficulty: Hard

Maximum Twin Sum of a Linked List

LeetCode 2236 | Difficulty: Medium

Min Stack

LeetCode 155 | Difficulty: Medium

Minimum Add to Make Parentheses Valid

LeetCode 957 | Difficulty: Medium

Minimum Insertions to Balance a Parentheses String

LeetCode 1648 | Difficulty: Medium

Minimum Number of Swaps to Make the String Balanced

LeetCode 2095 | Difficulty: Medium

N-ary Tree Postorder Traversal

LeetCode 776 | Difficulty: Easy

N-ary Tree Preorder Traversal

LeetCode 775 | Difficulty: Easy

Next Greater Element I

LeetCode 496 | Difficulty: Easy

Next Greater Element II

LeetCode 503 | Difficulty: Medium

Palindrome Linked List

LeetCode 234 | Difficulty: Easy

Remove K Digits

LeetCode 402 | Difficulty: Medium

Reorder List

LeetCode 143 | Difficulty: Medium

Simplify Path

LeetCode 71 | Difficulty: Medium

Trapping Rain Water

LeetCode 42 | Difficulty: Hard

Valid Parentheses

LeetCode 20 | Difficulty: Easy

Valid Parenthesis String

LeetCode 678 | Difficulty: Medium