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CodeTutor - Coding Interview Preparation
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Showing 20 of 55 questions
Cat and Mouse II
Hard
Dynamic Programming
Graphs
BFS (Breadth-First Search)
★
Dynamic Programming
Matrix Traversal
LeetCode #1728
Cat and Mouse
Hard
Dynamic Programming
Graphs
DFS (Depth-First Search)
1
2
3
★
Dynamic Programming
LeetCode #913
Chalkboard XOR Game
Hard
Arrays
Math
Greedy
★
LeetCode #810
Check if an Original String Exists Given Two Encoded Strings
Hard
Strings
Dynamic Programming
Dynamic Programming
★
LeetCode #2060
Check If It Is a Good Array
Hard
Math
Arrays
Greedy
★
LeetCode #1250
Check if Point Is Reachable
Hard
Math
Greedy
★
LeetCode #2543
Check If String Is Transformable With Substring Sort Operations
Hard
Strings
Sorting
Greedy
★
LeetCode #1585
Check if There Is a Valid Parentheses String Path
Hard
Arrays
Dynamic Programming
Dynamic Programming
Matrix Traversal
★
DFS (Depth-First Search)
LeetCode #2267
Checking Existence of Edge Length Limited Paths
Hard
Sorting
Arrays
Graphs
Union Find
★
Two Pointers
LeetCode #1697
Distinct Subsequences
Hard
Strings
Dynamic Programming
Dynamic Programming
★
LeetCode #115
Find in Mountain Array
Hard
Arrays
Binary Search
Binary Search
★
LeetCode #1095
Find Median from Data Stream
Hard
Sorting
Heap
Heap / Priority Queue
★
LeetCode #295
First Missing Positive
Hard
Arrays
Hash Tables
Matrix Traversal
★
LeetCode #41
IPO
Hard
Arrays
Heap
Sorting
Greedy
★
Heap / Priority Queue
LeetCode #502
Largest Rectangle in Histogram
Hard
Arrays
Stack
Monotonic Stack
★
LeetCode #84
LFU Cache
Hard
Linked Lists
Hash Tables
Hashing
★
LeetCode #460
Longest Increasing Path in a Matrix
Hard
Arrays
Dynamic Programming
Graphs
DFS (Depth-First Search)
★
Dynamic Programming
Matrix Traversal
LeetCode #329
Longest Valid Parentheses
Hard
Strings
Stack
Dynamic Programming
Dynamic Programming
Monotonic Stack
★
LeetCode #32
Maximum Frequency Stack
Hard
Stack
Hash Tables
Monotonic Stack
★
Hashing
LeetCode #895
Maximum Fruits Harvested After at Most K Steps
Hard
Arrays
Binary Search
Sliding Window
★
Prefix Sum
Two Pointers
LeetCode #2106