LeetCode 1: Two Sum Solution in Python (HashMap Explained)

Опубликовано: 13 Май 2025
на канале: CodingNinja

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LeetCode 1: Two Sum solution explained step by step in Python.

In this video, you’ll learn how to solve the Two Sum problem using a HashMap (dictionary) approach. This is one of the most common coding interview questions, and understanding this pattern is essential for many other LeetCode problems.

We’ll cover:

Brute force vs optimized solution
How HashMap reduces time complexity
Step-by-step explanation
Clean Python implementation

This explanation is beginner-friendly and helps you truly understand why the HashMap approach works.

🔍 Keywords:
two sum leetcode solution
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If you're preparing for coding interviews or practicing LeetCode, this video will help you master one of the most important patterns.

#leetcode #twosum #python #codinginterview #algorithms

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https://leetcode.com/problems/two-sum...
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■ Timeline
0:03 Explain a basic idea and key points
1:50 Demonstrate how it works
4:17 Coding
5:25 Time Complexity and Space Complexity

■ Blind 75 LeetCode questions
   • Blind 75 LeetCode Questions

■ Twitter
  / codingninjaaz

■ Instagram
  / codingninjaaz

■ Problem Link
https://leetcode.com/problems/two-sum...

■ Codes in the video
Python, JavaScript, Java and C++ are available from here.
https://leetcode.com/problems/two-sum...

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#pythonprogramming #leetcode #leetcode997 #algorithm #coding #programming #python #javascript #java #cplusplus

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