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CodeTutor - Coding Interview Preparation
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BFS (Breadth-First Search) (35)
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Dynamic Programming (69)
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Showing 20 of 401 questions
Design HashMap
Easy
Arrays
Linked Lists
Hash Tables
Hashing
★
LeetCode #706
Design HashSet
Easy
Arrays
Hash Tables
Hashing
★
LeetCode #705
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Design Twitter
Medium
Heap
Hash Tables
Heap / Priority Queue
★
LeetCode #355
Detect Squares
Medium
Arrays
Hash Tables
Hashing
★
LeetCode #2013
Jump Game II
Medium
Arrays
Dynamic Programming
Greedy
★
LeetCode #45
Diameter of Binary Tree
Easy
Trees
Recursion
DFS (Depth-First Search)
★
Binary Tree Traversal
LeetCode #543
Distinct Subsequences
Hard
Strings
Dynamic Programming
Dynamic Programming
★
LeetCode #115
Dota2 Senate
Medium
Strings
Queue
Greedy
★
LeetCode #649
Edit Distance
Medium
Strings
Dynamic Programming
Dynamic Programming
★
LeetCode #72
Evaluate Division
Medium
Hash Tables
Graphs
BFS (Breadth-First Search)
DFS (Depth-First Search)
Union Find
★
LeetCode #399
Evaluate Reverse Polish Notation
Medium
Arrays
Stack
Math
Monotonic Stack
★
LeetCode #150
Excel Sheet Column Title
Easy
Strings
Math
Greedy
★
LeetCode #168
Find in Mountain Array
Hard
Arrays
Binary Search
Binary Search
★
LeetCode #1095
Find K Closest Elements
Medium
Arrays
Binary Search
Two Pointers
Binary Search
★
Two Pointers
LeetCode #658
Find Median from Data Stream
Hard
Sorting
Heap
Heap / Priority Queue
★
LeetCode #295
Find Minimum in Rotated Sorted Array
Medium
Arrays
Binary Search
Binary Search
★
LeetCode #153
Find the Duplicate Number
Medium
Arrays
Two Pointers
Fast & Slow Pointers
Binary Search
★
LeetCode #287
Find the Town Judge
Easy
Arrays
Hash Tables
Graphs
Greedy
★
LeetCode #997
First Missing Positive
Hard
Arrays
Hash Tables
Matrix Traversal
★
LeetCode #41
4Sum
Medium
Sorting
Arrays
Two Pointers
Two Pointers
★
LeetCode #18