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• 06 | Algorithms

  The most commonly algorithms: sorting (Bubble/Quick/Merge Sort), binary search, recursion (Fibonacci, Factorial), dynamic programming (Knapsack, LCS), graphs (BFS/DFS), and classics like FizzBuzz, Two Sum, and Palindromes.

  No due date

  •1/15 issues closed
  6% complete14 open1 closed

• 05 | Streams and Lambdas (Functional)

  Modern, functional Java: lambda expressions, functional interfaces (Function, Predicate, Supplier...), and the Stream API (filter, map, reduce, groupingBy).

  No due date

  •3/3 issues closed
  100% complete0 open3 closed

• 04 | Exception Handling

  How to write robust code: try/catch/finally, custom exceptions (checked vs. unchecked), and automatic resource closing with try-with-resources.

  No due date

  •3/3 issues closed
  100% complete0 open3 closed

• 03 | Collections

  Data structures from the Java Collections Framework: ArrayList/LinkedList, HashSet/TreeSet, HashMap/TreeMap, and how to sort custom objects with Comparable/Comparator.

  No due date

  •4/4 issues closed
  100% complete0 open4 closed

• 02 | Object-Oriented Programming (OOP)

  The four pillars of OOP: classes and objects, encapsulation, inheritance, polymorphism, interfaces, and abstract classes. This is where Java starts to be "thought of" in terms of objects instead of just loose instructions.

  No due date

  •6/6 issues closed
  100% complete0 open6 closed