A Collection of LeetCode Patterns

LeetCode Patterns

Arrays

Linked List

Priority Queue/Set/Map

• Regret Greedy
  • Problem: 871. Minimum Number of Refueling Stops LeetCode
• Greedy Expansion/Merge-Sorted-Lists Type/Generate-Next Type
  • 2386. Find the K-Sum of an Array
  • 264. Ugly Number II
  • 313 Super Ugly Number (similar idea to 2386)

Queues and Stacks

Graphs

Trees

Number Theory

Combinatorics

Dynamic programming

Binary Search

• Binary Search Over the Answer
  • 875. Koko Eating Bananas
  • 3639. Minimum Time to Activate String
  • 2594. Minimum Time to Repair Cars
  • 2064. Minimized Maximum of Products Distributed to Any Store
  • 1011. Capacity To Ship Packages Within D Days
  • 2226. Maximum Candies Allocated to K Children
  • 1283. Find the Smallest Divisor Given a Threshold
  • 1552. Magnetic Force Between Two Balls
  • 1760. Minimum Limit of Balls in a Bag
  • 2187. Minimum Time to Complete Trips
  • 2071. Maximum Number of Tasks You Can Assign ❌
  • 1840 D. Wooden Toy Festival
  • 1873 E. Building an Aquarium
  • 1970 Last Day Where You Still Cross
  • 1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold
  • 2024. Maximize the Confusion of an Exam
  • 2141. Maximum Running Time of N Computers ❌
  • 3097. Shortest Subarray With OR at Least K II