★★★ Hard

★★★ HardDynamic ProgrammingLeetCodeTabulation

Leetcode # 3363. Find the Maximum Number of Fruits Collected

2025/08/09 A1go

★★★ HardLeetCodeMonotonic Stack

Leetcode # 2940. Find Building Where Alice and Bob Can Meet

2024/12/22 A1go

★★★ HardLeetCodeMathematicsTree

Leetcode # 2867. Count Valid Paths in a Tree

2023/10/04 A1go

★★★ HardLeetCodeTopology

Leetcode # 2876. Count Visited Nodes in a Directed Graph

2023/10/01 A1go

★★★ HardFactorLeetCodePrimeSieve of Eratosthenes

Leetcode # 2862. Maximum Element-Sum of a Complete Subset of Indices

2023/09/19 A1go

★★★ HardBinary LiftingLeetCode

Leetcode # 1483. ⭐️ Kth Ancestor of a Tree Node

2023/09/11 A1go

★★★ HardLeetCodeLowest Common AncestorStrongly Connected Component

Leetcode # 2846. Minimum Edge Weight Equilibrium Queries in a Tree

2023/09/10 A1go

★★★ HardheqpqInterval 區間LeetCodePriority QueueSliding Window

Leetcode # 632. Smallest Range Covering Elements from K Lists

2023/09/06 A1go

★★★ HardLeetCodeSliding Window

Leetcode # 2444. Count Subarrays With Fixed Bounds

2023/09/05 A1go

★★★ HardGreedy MethodLeetCode

Leetcode # 1183. Maximum Number of Ones

2023/08/29 A1go