LeetCode 118 Pascal’s Triangle | Easy Python Solution for Beginners | 2D List + DP Thinking

In this video, we solve LeetCode 118: Pascal’s Triangle using Python. This is an easy problem, but it teaches very important DSA concepts like building a 2D list row by row, using previous results to build the next result, handling boundary values carefully, and understanding the basic idea behind dynamic programming. We will understand the problem, observe the pattern, build the algorithm, write Python code, dry run the example, discuss time and space complexity, and finally cover common mistakes beginners make. Concepts covered: 2D lists in Python Row-by-row construction Previous row dependency Boundary elements Nested loops Dynamic programming intuition Problem: LeetCode 118 Pascal’s Triangle Difficulty: Easy Language: Python3 If you are learning DSA as a beginner, this problem is a great way to understand how patterns are converted into code.