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Showing 20 of 401 questions
Baseball Game
Easy
Arrays
Stack
Monotonic Stack
★
LeetCode #682
Basic Calculator II
Medium
Strings
Stack
Math
Monotonic Stack
★
LeetCode #227
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
Basic Calculator IV
Hard
Hash Tables
Recursion
Math
Strings
Stack
Backtracking
★
LeetCode #770
Basic Calculator
Hard
Strings
Stack
Math
Monotonic Stack
★
LeetCode #224
Battleships in a Board
Medium
Arrays
Graphs
Matrix Traversal
★
LeetCode #419
Beautiful Arrangement II
Medium
Arrays
Math
Greedy
★
LeetCode #667
Beautiful Arrangement
Medium
Arrays
Recursion
Backtracking
★
LeetCode #526
Beautiful Array
Medium
Arrays
Math
Dynamic Programming
★
LeetCode #932
Binary Tree Postorder Traversal
Easy
Recursion
Stack
Trees
DFS (Depth-First Search)
★
Binary Tree Traversal
LeetCode #145
Best Poker Hand
Easy
Arrays
Hash Tables
Greedy
★
LeetCode #2347
Best Position for a Service Centre
Hard
Arrays
Math
Greedy
★
LeetCode #1515
Best Sightseeing Pair
Medium
Arrays
Dynamic Programming
Greedy
★
LeetCode #1014
Best Team With No Conflicts
Medium
Arrays
Dynamic Programming
Sorting
Dynamic Programming
★
LeetCode #1626
Best Time to Buy and Sell Stock II
Medium
Arrays
Dynamic Programming
Greedy
★
LeetCode #122
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
Best Time to Buy and Sell Stock with Cooldown
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
LeetCode #309
Binary Tree Paths
Easy
Strings
Recursion
Trees
DFS (Depth-First Search)
★
Backtracking
Binary Tree Traversal
LeetCode #257
Best Time to Buy and Sell Stock with Transaction Fee
Medium
Arrays
Dynamic Programming
Dynamic Programming
★
Greedy
LeetCode #714
01 Matrix
Medium
Arrays
Graphs
BFS (Breadth-First Search)
★
Matrix Traversal
Dynamic Programming
LeetCode #542