NPCBL Engineer (Software / Programming) June 2026 – Written (BUET) question & solution

Questions from the NPCBL Engineer (Software / Programming) recruitment exam, June 2026 – Written (BUET), shared by the candidates who sat it. So far 3 written questions have been shared, and 1 written question has worked answers. Topics include Time Complexity, Deadlock and OOP.

Written (3)

  1. Sort the following time complexities in order of execution speed, from slowest to fastest, assuming a sufficiently large input size n. O(…
  2. What is a deadlock in operating systems? Explain the concept with a real-world example.
  3. class Base { public: Base() { cout << "Base Constructor" << endl; } ~Base() { cout << "Base Destructor" << endl; } }; class Derived…