nishant-Tiwari24/data-structures-algorithms

Data structures and algorithms are fundamental concepts in computer science and programming.Data structures are ways of organizing and storing data, and algorithms are step-by-step procedures for solving problems or performing tasks.

# 📅 Six-Month DSA Study Plan ## Overview This structured six-month plan gradually introduces core DSA concepts and patterns, with 8-10 carefully selected practice questions each week. By the end of this plan, you’ll have covered foundational topics and advanced concepts needed for top-tier technical interviews. --- # Special Resources 1. [20 Patterns to Crack MAANG](https://drive.google.com/drive/folders/1HWKovNBImHmyoNlEFEzl71KOiVa3QezO) 2. [14 Tricks to Identify Patterns](https://drive.google.com/drive/folders/1Da_v5uHIvBscWcRRgMsYGq-hJ00dQL9Y) ## Month 1: Arrays and Strings ### **Week 1: Arrays Basics & Simple Patterns** - **Topics**: Two-pointer, Sliding Window, HashMap basics - **Patterns**: Prefix Sum, Running Sum - **Practice**: 1. **[Easy]** [Two Sum](https://leetcode.com/problems/two-sum/) 2. **[Easy]** [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/) 3. **[Easy]** [Maximum Subarray (Kadane’s Algorithm)](https://leetcode.com/problems/maximum-subarray/) 4. **[Medium]** [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/) 5. **[Medium]** [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/) 6. **[Medium]** [Subarray Sum Equals K](https://leetcode.com/problems/subarray-sum-equals-k/) 7. **[Medium]** [Longest Subarray with Sum K](https://practice.geeksforgeeks.org/problems/longest-sub-array-with-sum-k0809/1/) 8. **[Medium]** [Minimum Size Subarray Sum](https://leetcode.com/problems/minimum-size-subarray-sum/) ### **Week 2: Advanced Array Manipulations** - **Topics**: Sorting, Interval Overlap, Cyclic Sort - **Patterns**: Sorting + Two-pointer, Merge Intervals - **Practice**: 1. **[Easy]** [Sort Colors (Dutch National Flag Problem)](https://leetc