🎉 Day 100: Combination Sum II Explained in Telugu | Leetcode 40 | Backtracking Python | srkcodes

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Published on April 11, 2025 12:31:08 PM ● Video Link: https://www.youtube.com/watch?v=xAz9e1-PeRg

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🎉 Welcome to Day 100 of srkcodes!
A century of coding content in Telugu 🚀 — and today’s problem is a special one: Leetcode #40 - Combination Sum II using Backtracking, a key concept in solving advanced DSA interview questions.

In this milestone episode, we solve a classic problem that strengthens your problem-solving skills and builds mastery in recursive algorithms, backtracking, and combinatorics using Python.

🔍 What You’ll Learn in This Video:
✅ What is Combination Sum II problem and how it's different from Combination Sum I
✅ Using Backtracking to explore combinations efficiently
✅ How to avoid duplicate combinations using sorting and skip conditions
✅ Step-by-step Python implementation with complete explanation in Telugu
✅ Understanding Time & Space Complexity of recursive solutions

💡 Key DSA Concepts Covered:
Backtracking Algorithm
Combination generation
Duplicate avoidance techniques
Python recursion & logic building for interviews

💬 Special Day 100 Challenge:
Can you solve Combination Sum III or Subsets II using backtracking? Post your code in the comments and let’s grow together! 💬

🔔 Don’t forget to like, share, and subscribe to srkcodes for daily Telugu coding tutorials, Leetcode solutions, and DSA interview prep.

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🔗 External Study Resources for Deep Dive:
📝 Problem discussed in the videhttps://leetcode.com/problems/combination-sum-ii/description/bina...

📚 Topic's ⬇ ️
Backtrhttps://www.programiz.com/dsa/backtracking-algorithmacktra...

💡 LeetCode prohttps://leetcode.com/problem-list/backtracking/list/bac...