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CodeTutor - Coding Interview Preparation
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Showing 20 of 401 questions
Gas Station
Medium
Arrays
Greedy
★
LeetCode #134
Generate Parentheses
Medium
Strings
Recursion
Backtracking
★
LeetCode #22
Greatest Common Divisor of Strings
Easy
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Math
Strings
Greedy
★
LeetCode #1071
Group Anagrams
Medium
Sorting
Hash Tables
Strings
Hashing
★
LeetCode #49
Guess Number Higher or Lower
Easy
Binary Search
Binary Search
★
LeetCode #374
Hand of Straights
Medium
Sorting
Arrays
Hash Tables
Greedy
★
Heap / Priority Queue
LeetCode #846
Happy Number
Easy
Math
Hash Tables
Fast & Slow Pointers
★
LeetCode #202
House Robber II
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #213
House Robber III
Medium
Trees
Dynamic Programming
DFS (Depth-First Search)
★
Dynamic Programming
LeetCode #337
House Robber
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #198
Implement Queue using Stacks
Easy
Queue
Stack
Monotonic Stack
★
LeetCode #232
Linked List Cycle
Easy
Two Pointers
Hash Tables
Linked Lists
Fast & Slow Pointers
★
LeetCode #141
Implement Stack using Queues
Easy
Queue
Stack
Monotonic Stack
★
LeetCode #225
Implement Trie (Prefix Tree)
Medium
Strings
Hash Tables
Trie
★
LeetCode #208
Insert Interval
Medium
Arrays
Overlapping Intervals
★
LeetCode #57
Insert into a Binary Search Tree
Easy
Trees
Binary Tree Traversal
★
LeetCode #701
Interleaving String
Medium
Strings
Dynamic Programming
Dynamic Programming
★
LeetCode #97
Invert Binary Tree
Easy
Trees
Recursion
Binary Tree Traversal
DFS (Depth-First Search)
BFS (Breadth-First Search)
★
LeetCode #226
IPO
Hard
Arrays
Heap
Sorting
Greedy
★
Heap / Priority Queue
LeetCode #502
Island Perimeter
Easy
Arrays
Math
Matrix Traversal
★
LeetCode #463