Dynamic Programming pattern
Pascal's Triangle
Given numRows, return the first numRows of Pascal's triangle. Each number is the sum of the two directly above it. Watch it run step by step, then write your own pseudocode and get it checked by AI.
- LeetCode 118
- Easy
- 2 approaches
Sign in with Google or GitHub and you land straight on this page. DSA comes with the all labs plan and every ChaiCode batch.
Dynamic ProgrammingLeetCode 118
Easy
From the first idea to the best one
- 01 Brute force · binomial formula O(rows²)O(rows²) space
- 02 Optimized · sum the two above O(rows²)O(rows²) space
What you will learn
- How to read Pascal's Triangle and spot the dynamic programming pattern in it
- Brute force · binomial formula: O(rows²) time, O(rows²) space
- Optimized · sum the two above: O(rows²) time, O(rows²) space
- The pseudocode for each approach, its line lit as the animation runs
- Practice: write your own pseudocode and get it checked
More Dynamic Programming
See Pascal's Triangle run, step by step
Sign in and this page opens on the animation, with all 18 Dynamic Programming problems beside it.
DSA comes with the all labs plan and every ChaiCode batch.