Training Trains Internship
Student login
← All free certificates
Free learning path

Data Structures & Algorithms

10 short modules. Each one: a simple lesson, two quick games and a 8-question quiz for its own free certificate. Finish them all, then take the full Data Structures & Algorithms certificate.

0 of 10 module certificates
Start module 1 →
  1. Why DSA mattersData structures organise data; algorithms solve problems step by step.0/4
  2. Complexity analysisMeasure algorithm efficiency with Big-O.0/4
  3. Arrays and stringsMaster the most common interview data structures.0/4
  4. Linked listsUse nodes connected by pointers.0/4
  5. Stacks and queuesLIFO and FIFO structures.0/4
  6. HashingLook up data in constant time with hash tables.0/4
  7. Trees and binary search treesStore hierarchical and sorted data.0/4
  8. Heaps and priority queuesAlways get the smallest or largest element fast.0/4
  9. GraphsModel networks and relationships.0/4
  10. Problem-solving patterns and interviewsApply DSA to solve problems confidently.0/4
Final step

🏆 Full Data Structures & Algorithms certificate

20 questions from basic to advanced, 60% to pass. Best taken after the modules.

Get the full certificate →