- Java
- HTML
- CSS
- JavaScript
- C++
- Python
- Object
- Class
- Inheritance
- Polymorphism
- Abstraction
- Encapsulation
- Interface
- Enum
- Lambda Expressions
- Method Referance
- Default and Static Method
- Map (HashMap)
- Linked List
- Array List
- Consumer
- Supplier
- Predicate
- Functional
- Optional
- Stacks
- Queues
- Hashmap
- Linked List
- Trees
-
Sorting
- QuickSort
- Counting Sort
- Merge Sort
-
Searching
- Binary Search
- Ternary Search
-
Strings
- Hash
- NIIT – StackRoute
* W3School
* CodeAcademy
* GeeksForGeeks
* Freecodecamp
* Progate
* Cs50 by Harvard university