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Showing 20 of 55 questions
Allocate Mailboxes
Hard
Sorting
Arrays
Dynamic Programming
Math
Dynamic Programming
★
LeetCode #1478
Arithmetic Slices II - Subsequence
Hard
Arrays
Hash Tables
Dynamic Programming
1
2
3
Dynamic Programming
★
LeetCode #446
Candy
Hard
Arrays
Greedy
★
LeetCode #135
Basic Calculator IV
Hard
Hash Tables
Recursion
Math
Strings
Stack
Backtracking
★
LeetCode #770
Basic Calculator
Hard
Strings
Stack
Math
Monotonic Stack
★
LeetCode #224
Best Position for a Service Centre
Hard
Arrays
Math
Greedy
★
LeetCode #1515
Best Time to Buy and Sell Stock III
Hard
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #123
Best Time to Buy and Sell Stock IV
Hard
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #188
Binary Tree Cameras
Hard
Trees
Dynamic Programming
DFS (Depth-First Search)
★
Greedy
LeetCode #968
Binary Tree Maximum Path Sum
Hard
Trees
Recursion
Dynamic Programming
DFS (Depth-First Search)
★
Dynamic Programming
LeetCode #124
Booking Concert Tickets in Groups
Hard
Arrays
Binary Search
Binary Search
★
LeetCode #2286
Brace Expansion II
Hard
Strings
Recursion
Stack
Backtracking
DFS (Depth-First Search)
★
LeetCode #1096
Bricks Falling When Hit
Hard
Arrays
Graphs
Union Find
★
Matrix Traversal
LeetCode #803
Build a Matrix With Conditions
Hard
Arrays
Graphs
Topological Sort
★
LeetCode #2392
Build Array Where You Can Find The Maximum Exactly K Comparisons
Hard
Arrays
Dynamic Programming
Dynamic Programming
Prefix Sum
★
LeetCode #1420
Building Boxes
Hard
Math
Binary Search
Binary Search
★
Greedy
LeetCode #1739
Burst Balloons
Hard
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #312
Bus Routes
Hard
Arrays
Hash Tables
Graphs
BFS (Breadth-First Search)
★
LeetCode #815
Car Fleet II
Hard
Arrays
Stack
Math
Monotonic Stack
★
LeetCode #1776
24 Game
Hard
Math
Arrays
Recursion
Backtracking
★
LeetCode #679