400+ DSA Problem Solving Challange

Sorting Techniques
Array Problems (Easy - Hard)
Binary Search (1D & 2D Arrays)
Strings (Basic & Medium)
Linked Lists (SLL, DLL)
Recursion Patterns
Bit Manipulation
Stacks & Queues
Sliding Window & Two Pointers
Heaps (Medium & Hard)
Greedy Algorithms
Binary Trees (Traversals & Problems)
Binary Search Trees (Concepts & Problems)
Graphs (Concepts & Problems)
Trees (Concepts & Problems)