LeetCode 1: Two Sum Solution in Python (HashMap Explained)
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
leetcode 1 python solution
two sum hashmap explanation
leetcode two sum tutorial
coding interview two sum
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
------------------------------------------------------------------------------------------------------
⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
If this channel or any of the videos have been helpful to you, consider supporting through membership. It really helps motivate me to keep creating more content. There are 3 membership levels, and the lowest one starts at just 90 yen ($0.61 as of July 22, 2025). Thank you for your support!
⭐ Membership link↓
/ @codingninjaexamazon
⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
⭐️ Please subscribe to my channel from here.
/ @codingninjaexamazon
⭐️ Please upvote the post from here.
https://leetcode.com/problems/two-sum...
------------------------------------------------------------------------------------------------------
■ 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...
■ Playlists
Array&Hash： • Majority Element - LeetCode #169 - O(n) an...
Two pointers： • Video
Stack： • Car Fleet LeetCode 853 - Intuitive Guide +...
Sliding Window： • Permutation in String - LeetCode #567 with...
Binary Search： • Binary Search - LeetCode #704 with python ...
Dynamic Programming : • Video
Linked List： • Video
Heap： • Last Stone Weight - LeetCode #1046 with py...
Tree： • Video
Backtracking： • Video
Greedy : • Video
Graph： • Max Area of Island - Crack This Grid Probl...
Math : • Video
Easy Level Questions : • Video
Medium Level Questions : • Permutation in String - LeetCode #567 with...
Hard Level Questions : • Merge k Sorted Lists - LeetCode #23 with p...
#pythonprogramming #leetcode #leetcode997 #algorithm #coding #programming #python #javascript #java #cplusplus
Auf dieser Seite können Sie das Online-Video LeetCode 1: Two Sum Solution in Python (HashMap Explained) mit der Dauer stunde minuten sekunde in guter Qualität ansehen, das der Benutzer CodingNinja 13 Mai 2025 hochgeladen hat, den Link mit Freunden und Bekannten teilen, dieses Video wurde auf Youtube bereits 75,686 Mal angesehen und es wurde von 430 den Zuschauern gefallen. Viel Spaß beim Betrachtenden Zuschauern gefallen!
