Welcome to the Interview Preparation repository! 🚀
This repository is designed to help you build a solid foundation in Data Structures and Algorithms (DSA) and Computer Fundamentals for technical interviews.
Here's a concise and organized DSA Summary Table that lists important topics and their core concepts/problems:
| Topic | Concepts/Problems |
|---|---|
| Arrays/Strings | Basic Traversal, Prefix Sum, Sliding Window, Subarrays/Subsequences, Kadane's Algo |
| Two Pointers | Pair Sum Problems, Palindrome Check, Sorted Array Merging, Remove Duplicates |
| Hash Maps/Sets | Frequency Count, Subarray Sum, Anagrams, Longest Substring Without Repeats |
| Binary Search | Search in Sorted Array, Upper/Lower Bound, Rotated Array, Search Space Problems |
| Sorting | Bubble, Selection, Merge Sort, Quick Sort, Counting Sort, Comparator Functions |
| Recursion/Backtracking | Subset Generation, Permutations, N-Queens, Sudoku Solver, Maze Problems |
| Dynamic Programming | Fibonacci, Knapsack, Longest Subsequence, Grid Problems, Partition Problems |
| Stacks/Queues | Next Greater Element, Balanced Parentheses, Sliding Window Maximum, Monotonic Stack |
| Linked List | Reversal, Detect Cycle, Merge Two Lists, Intersection Point, LRU Cache |
| Trees | Binary Tree Traversal (Inorder, Preorder, Postorder), BST Operations, Lowest Common Ancestor |
| Graphs | BFS, DFS, Dijkstra, Kruskal, Topological Sort, Connected Components |
| Heap/Priority Queue | Heapify, Kth Largest/Smallest, Median in Stream, Merge K Sorted Arrays |
| Greedy Algorithms | Activity Selection, Huffman Coding, Job Scheduling, Minimum Spanning Tree (Prim’s) |
| Trie | Prefix Tree, Autocomplete, Search Engine Implementation, Word Search |
| Bit Manipulation | Set/Unset/Toggle Bits, XOR Problems, Single Number, Power of Two |
| Segment Tree/Fenwick | Range Sum Query, Lazy Propagation, Point Update, Range Minimum Query |
| Sliding Window | Fixed/Variable Size Window, Maximum Sum Subarray, Longest Substring Problems |
| Divide and Conquer | Merge Sort, Quick Sort, Exponentiation, Closest Pair of Points |
This repository contains structured notes, explanations, and examples for key DSA topics and Computer Fundamentals.
Each section is designed to provide:
- Clear explanations of concepts
- Code snippets with examples
- Frequently asked interview problems
Perfect for quick revisions and focused interview preparation! 🎯
- For a comprehensive guide on CS core subjects, refer here.
- DBMS: Watch this video here
- LeetCode Pattern : here
To supplement your DSA knowledge, check out LeetCode's Interview Crash Course.
- Start with Basics: Go through each topic step-by-step.
- Practice Problems: Solve problems related to each topic.
- Revise Concepts: Use the summary table for quick revision.
- Master Computer Fundamentals: Explore additional resources for concepts like DBMS, Operating Systems, and Networks.
Happy Learning and Best of Luck for Your Interviews! 🚀
Contributions are welcome — feel free to raise issues or add helpful content! 😊