Скачать или смотреть Leetcode 39||Combination Sum||Recursion♥️||Tree🌲||Dryrun

In this video, we solve the Leetcode 39: Combination Sum problem using backtracking approach.

✨ Problem Statement:
Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target.
You may use the same number from candidates unlimited number of times.

🧠 Approach:
We use recursion + backtracking to explore all possible combinations. The key idea is to explore each element as many times as needed and backtrack when the target becomes negative or zero.

✅ Key Concepts Covered:

Backtracking

Recursion

Base condition design

For loop inside recursion

Avoiding duplicates in result


📌 Time Complexity: Exponential
📌 Space Complexity: Depends on recursion stack depth

🔍 Tags:
#Leetcode39 #CombinationSum #Backtracking #DSAinHindi #Recursion #CodingInterview #LeetcodeHindi #CodeXtreme

📚 Leetcode Link:
https://leetcode.com/problems/combina...

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