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CodeTutor - Coding Interview Preparation
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Showing 20 of 216 questions
Combination Sum III
Medium
Arrays
Recursion
Backtracking
★
LeetCode #216
Combination Sum IV
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #377
1
2
3
4
5
6
7
8
9
10
11
Combination Sum
Medium
Arrays
Recursion
Backtracking
★
LeetCode #39
Combinations
Medium
Arrays
Recursion
Backtracking
★
LeetCode #77
Concatenation of Array
Easy
Arrays
Two Pointers
★
LeetCode #1929
Construct Binary Tree from Preorder and Inorder Traversal
Medium
Arrays
Trees
Hash Tables
DFS (Depth-First Search)
★
Binary Tree Traversal
LeetCode #105
Construct Quad Tree
Medium
Arrays
Recursion
Trees
Matrix Traversal
★
DFS (Depth-First Search)
LeetCode #427
Container With Most Water
Medium
Arrays
Two Pointers
Two Pointers
★
Greedy
LeetCode #11
Contains Duplicate II
Easy
Arrays
Hash Tables
Sliding Window
★
LeetCode #219
Contains Duplicate
Easy
Arrays
Hash Tables
Hashing
★
LeetCode #217
Continuous Subarray Sum
Medium
Arrays
Hash Tables
Math
Prefix Sum
★
LeetCode #523
Convert Sorted Array to Binary Search Tree
Easy
Arrays
Recursion
Trees
Binary Search
★
DFS (Depth-First Search)
LeetCode #108
Counting Bits
Easy
Arrays
Dynamic Programming
Math
Dynamic Programming
★
LeetCode #338
Daily Temperatures
Medium
Arrays
Stack
Monotonic Stack
★
LeetCode #739
Design Circular Queue
Medium
Arrays
Queue
Two Pointers
★
LeetCode #622
Design HashMap
Easy
Arrays
Linked Lists
Hash Tables
Hashing
★
LeetCode #706
Design HashSet
Easy
Arrays
Hash Tables
Hashing
★
LeetCode #705
Detect Squares
Medium
Arrays
Hash Tables
Hashing
★
LeetCode #2013
Evaluate Reverse Polish Notation
Medium
Arrays
Stack
Math
Monotonic Stack
★
LeetCode #150
Find in Mountain Array
Hard
Arrays
Binary Search
Binary Search
★
LeetCode #1095