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CodeTutor - Coding Interview Preparation
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Showing 20 of 228 questions
All Paths From Source to Target
Medium
Recursion
Graphs
DFS (Depth-First Search)
★
Backtracking
LeetCode #797
All Possible Full Binary Trees
Medium
Trees
Recursion
Dynamic Programming
Backtracking
1
2
3
4
5
6
7
8
9
10
11
12
Dynamic Programming
★
LeetCode #894
Alphabet Board Path
Medium
Strings
Hash Tables
Matrix Traversal
★
LeetCode #1138
Ambiguous Coordinates
Medium
Strings
Recursion
Backtracking
★
LeetCode #816
Amount of Time for Binary Tree to Be Infected
Medium
Trees
Hash Tables
Graphs
BFS (Breadth-First Search)
★
Binary Tree Traversal
LeetCode #2385
Angle Between Hands of a Clock
Medium
Math
Greedy
★
LeetCode #1344
Apply Bitwise Operations to Make Strings Equal
Medium
Math
Strings
Greedy
★
LeetCode #2546
Arithmetic Slices
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #413
Array Nesting
Medium
Arrays
DFS (Depth-First Search)
★
LeetCode #565
Array of Doubled Pairs
Medium
Sorting
Arrays
Hash Tables
Greedy
★
LeetCode #954
Array With Elements Not Equal to Average of Neighbors
Medium
Arrays
Sorting
Greedy
★
LeetCode #1968
As Far from Land as Possible
Medium
Arrays
Graphs
BFS (Breadth-First Search)
★
Matrix Traversal
LeetCode #1162
Asteroid Collision
Medium
Arrays
Stack
Monotonic Stack
★
LeetCode #735
Average Waiting Time
Medium
Arrays
Greedy
★
LeetCode #1701
Avoid Flood in The City
Medium
Arrays
Hash Tables
Greedy
Binary Search
★
LeetCode #1488
Bag of Tokens
Medium
Sorting
Arrays
Two Pointers
Two Pointers
★
Greedy
LeetCode #948
Balance a Binary Search Tree
Medium
Trees
Binary Tree Traversal
★
DFS (Depth-First Search)
LeetCode #1382
Basic Calculator II
Medium
Strings
Stack
Math
Monotonic Stack
★
LeetCode #227
Battleships in a Board
Medium
Arrays
Graphs
Matrix Traversal
★
LeetCode #419
01 Matrix
Medium
Arrays
Graphs
BFS (Breadth-First Search)
★
Matrix Traversal
Dynamic Programming
LeetCode #542