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CodeTutor - Coding Interview Preparation
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Showing 20 of 32 questions
132 Pattern
Medium
Arrays
Stack
Monotonic Stack
★
LeetCode #456
Add Two Numbers II
Medium
Math
Linked Lists
Stack
LinkedList In-Place Reversal
★
LeetCode #445
1
2
Asteroid Collision
Medium
Arrays
Stack
Monotonic Stack
★
LeetCode #735
Backspace String Compare
Easy
Strings
Stack
Two Pointers
Two Pointers
★
LeetCode #844
Baseball Game
Easy
Arrays
Stack
Monotonic Stack
★
LeetCode #682
Basic Calculator II
Medium
Strings
Stack
Math
Monotonic Stack
★
LeetCode #227
Basic Calculator IV
Hard
Hash Tables
Recursion
Math
Strings
Stack
Backtracking
★
LeetCode #770
Basic Calculator
Hard
Strings
Stack
Math
Monotonic Stack
★
LeetCode #224
Binary Search Tree Iterator
Medium
Trees
Stack
Binary Tree Traversal
Monotonic Stack
★
LeetCode #173
Binary Tree Inorder Traversal
Easy
Trees
Stack
Recursion
Binary Tree Traversal
★
DFS (Depth-First Search)
LeetCode #94
Binary Tree Postorder Traversal
Easy
Recursion
Stack
Trees
DFS (Depth-First Search)
★
Binary Tree Traversal
LeetCode #145
Binary Tree Preorder Traversal
Easy
Recursion
Stack
Trees
Binary Tree Traversal
★
DFS (Depth-First Search)
LeetCode #144
Brace Expansion II
Hard
Strings
Recursion
Stack
Backtracking
DFS (Depth-First Search)
★
LeetCode #1096
Build an Array With Stack Operations
Easy
Arrays
Stack
Two Pointers
★
LeetCode #1441
Car Fleet II
Hard
Arrays
Stack
Math
Monotonic Stack
★
LeetCode #1776
Car Fleet
Medium
Arrays
Stack
Sorting
Monotonic Stack
★
LeetCode #853
Check if a Parentheses String Can Be Valid
Medium
Strings
Stack
Greedy
★
LeetCode #2116
Check If Word Is Valid After Substitutions
Medium
Strings
Stack
Monotonic Stack
★
LeetCode #1003
Daily Temperatures
Medium
Arrays
Stack
Monotonic Stack
★
LeetCode #739
Decode String
Medium
Strings
Stack
Recursion
Monotonic Stack
★
LeetCode #394