Gen Interview Question

[ ] Polymorphism and its types [ ] Classes and object [ ] Write a function to take a parameter and find out whether it is a parent or child class create an object according to it and return that created object [ ] Searching for an element in an unsorted array [ ] Reverse a linked list [ ] Binary tree implementation [ ] Is method overloading possible for different return types if yes/ no why?? [ ] Pointers concepts [ ] Hashmaps? [ ] Difference between hashmaps and array and which is better [ ] Familiar with the backend? [ ] Multithreading