Leetcode 115: Distinct Subsequences in Telugu | DFS, Memoization, DP | Python DSA | srkcodes

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Welcome to srkcodes! In this Telugu DSA tutorial, we solve Leetcode Question #115: Distinct Subsequences — a high-value dynamic programming problem often asked in coding interviews.

🔥 What you’ll learn in this video:
1️⃣ Brute Force DFS (Exponential): Understand the core idea behind subsequence formation.
2️⃣ DFS + Memoization (Top-Down DP): Efficiently reduce repeated states using caching.
3️⃣ 1D DP (Optimized): Fastest and cleanest approach used in real interview environments.

👨‍💻 This video is perfect for anyone preparing for software engineering interviews, DSA rounds, or Leetcode practice. The explanations are beginner-friendly, fully in Telugu, and written in clear Python so you can learn faster and solve more problems with confidence.

💡 Key Highlights:
Learn how subsequences work under the hood.
Understand overlapping subproblems and optimal DP design.
Master a pattern that repeats in many dynamic programming questions.
Improve your interview-ready Python skills.

💬 Drop your doubts or alternative solutions in the comments — let’s grow together!
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🔗 External Study Resources for Deep Dive:
📝 Problem discussed in the video ➡️ https://leetcode.com/problems/distinc...

Blind 75 ➡️ https://leetcode.com/problem-list/nbd...
Neetcode 150 ➡️ https://leetcode.com/problem-list/elq...