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CodeTutor - Coding Interview Preparation
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Showing 8 of 228 questions
Top K Frequent Elements
Medium
Heap
Sorting
Arrays
Hash Tables
Counting / Bucket Sort
★
LeetCode #347
Unique Paths II
Medium
Arrays
Dynamic Programming
Dynamic Programming
1
2
3
4
5
6
7
8
9
10
11
12
Matrix Traversal
★
LeetCode #63
Unique Paths
Medium
Arrays
Dynamic Programming
Math
Dynamic Programming
★
LeetCode #62
Valid Parenthesis String
Medium
Strings
Stack
Dynamic Programming
Greedy
★
Dynamic Programming
LeetCode #678
Valid Sudoku
Medium
Arrays
Hash Tables
Matrix Traversal
★
LeetCode #36
Validate Binary Search Tree
Medium
Trees
Recursion
DFS (Depth-First Search)
★
Binary Tree Traversal
LeetCode #98
Word Break
Medium
Dynamic Programming
Hash Tables
Strings
Dynamic Programming
★
LeetCode #139
Word Search
Medium
Arrays
Recursion
Backtracking
DFS (Depth-First Search)
★
LeetCode #79