07:47

Leetcode 1220. Count Vowels Permutation (climbing stairs)

24:34

Leetcode 127. Word Ladder (bfs + set)

14:52

Leetcode 3031. Minimum Time to Revert Word to Initial State II (z function)

16:22

Leetcode 2223. Sum of Scores of Built Strings (z function)

13:44

Leetcode 214. Shortest Palindrome (kmp)

22:43

Leetcode 3008. Find Beautiful Indices in the Given Array II (kmp + binary search)

09:49

Leetcode 3036. Number of Subarrays That Match a Pattern II (kmp)

11:18

Leetcode 1764. Form Array by Concatenating Subarrays of Another Array (kmp)

08:46

Leetcode 3037. Find Pattern in Infinite Stream II (kmp)

07:23

Leetcode 1392. Longest Happy Prefix (kmp)

10:08

Leetcode 28. Find the Index of the First Occurrence in a String (kmp)

06:58

Leetcode 248. Strobogrammatic Number III (backtracking)

09:56

Leetcode 247. Strobogrammatic Number II (backtracking)

05:59

Leetcode 2593. Find Score of an Array After Marking All Elements (hash set)

07:55

Leetcode 2249. Count Lattice Points Inside a Circle (geometry)

09:04

Leetcode 1223. Dice Roll Simulation (linear dp)

05:37

Leetcode 576. Out of Boundary Paths (linear dp)

05:37

Leetcode 3290. Maximum Multiplication Score (state machine dp)

08:28

Leetcode 3259. Maximum Energy Boost From Two Drinks(state machine dp)

10:45

Leetcode 1981. Minimize the Difference Between Target and Chosen Elements (group knapsack)

06:45

Leetcode 1155. Number of Dice Rolls With Target Sum (group/bounded knapsack)

16:49

Leetcode 1449. Form Largest Integer With Digits That Add up to Target (unbounded knapsack)

11:34

Leetcode 3183. The Number of Ways to Make the Sum (unbounded knapsack)

03:25

Leetcode 518. Coin Change II (unbounded knapsack)

06:18

Leetcode 322. Coin Change (unbounded knapsack)

06:29

Leetcode 1049. Last Stone Weight II (01 knapsack)

12:35

Leetcode 1774. Closest Dessert Cost (01 knapsack)

16:41

Leetcode 474. Ones and Zeroes (01 knapsack)

11:26

Leetcode 3180. Maximum Total Reward Using Operations I (01 knapsack)

06:07

Leetcode 2787. Ways to Express an Integer as Sum of Powers (01 knapsack)

06:57

Leetcode 2915. Length of the Longest Subsequence That Sums to Target (01 knapsack)

12:08

Leetcode 1937. Maximum Number of Points with Cost (grid dp)

06:27

Leetcode 2510. Check if There is a Path With Equal Number of 0's And 1's (grid dp)

07:00

Leetcode 2328. Number of Increasing Paths in a Grid (grid dp)

07:14

Leetcode 174. Dungeon Game (grid dp)

19:37

Leetcode 1301. Number of Paths with Max Score (grid dp)

11:03

Leetcode 1594. Maximum Non Negative Product in a Matrix (grid dp)

07:59

Leetcode 2304. Minimum Path Cost in a Grid (grid dp)

17:27

Leetcode 1191. K-Concatenation Maximum Sum (max subarray sum dp)

07:08

Leetcode 2606. Find the Substring With Maximum Cost (max subarray sum dp)

07:39

Leetcode 3186. Maximum Total Damage With Spell Casting (climbing stairs dp)

06:48

Leetcode 213. House Robber II (house robber dp)

14:25

Leetcode 2266. Count Number of Texts (climbing stairs dp)

07:19

Leetcode 2533. Number of Good Binary Strings (climbing stairs or unbounded knapsack)

17:46

Leetcode 1278. Palindrome Partitioning III (partition dp)

09:01

Leetcode 2311. Longest Binary Subsequence Less Than or Equal to K (greedy)

13:42

Leetcode 1702. Maximum Binary String After Change (greedy)

05:34

Leetcode 1461. Check If a String Contains All Binary Codes of Size K (set)

17:18

Leetcode 2858. Minimum Edge Reversals So Every Node Is Reachable (dp on trees)

17:48

Leetcode 2581. Count Number of Possible Root Nodes (dp on trees - reroot)

11:14

Leetcode 2792. Count Nodes That Are Great Enough (tree postorder)

03:46

Leetcode 1612. Check If Two Expression Trees are Equivalent (tree traversal)

05:28

Leetcode 1265. Print Immutable Linked List in Reverse (linked list)

10:38

Leetcode 430. Flatten a Multilevel Doubly Linked List (linked list)

19:05

Leetcode 146. LRU Cache (most asked linked list problem)

15:59

Leetcode 1171. Remove Zero Sum Consecutive Nodes from Linked List (prefix sum)

05:42

Leetcode 1634. Add Two Polynomials Represented as Linked Lists (merge linked list)

07:09

Leetcode 1509. Minimum Difference Between Largest and Smallest Value in Three Moves (greedy)

07:03

Leetcode 2567. Minimum Score by Changing Two Elements (greedy)

05:49

Leetcode 2178. Maximum Split of Positive Even Integers (min max greedy)