LeetCode

• Tag:
  • LC assigns tags to problems based on the underlying data structure and algorithm. One problem can have many tags
• Discussion:
  • for each problem, there is a forum thread where people can discuss/share solutions
  • a good place to find great solution if ever got stuck.
• Articles:
  • "official solution" with detailed explanation
  • also grouped, e.g. articles on linked list problems
• Courses:
  • knowledge and relevant problems in algorithms