LeetCode 10 in 2 minutes RegEx via DP! #algorithmsanddatastructures #leetcode #python

Explaining the solution to ultra-hard LeetCode problem 10 Regular Expression Matching — implementing a custom regex parser supporting characters `.` and `*` using dynamic programming method. In this short video, I explain how state transitions work and why the asterisk allows “backtracking” two positions in the pattern. I show step-by-step filling of the DP matrix from basic cases (empty string + pattern) to final answer at bottom-right corner. Key details include handling `.` as any character and `*` as repetition of previous element zero or more times. The entire solution is based on the logic of `dp[i][j]` matrix where each cell reflects substring match up to current indices. More detailed explanation can be found in my article on Habrahabr. If you are preparing for interviews or studying algorithms, this task must be understood! Subscribe to get weekly breakdowns of complex problems!

#python #coding #interview #softwareengineering

Видео LeetCode 10 in 2 minutes RegEx via DP! #algorithmsanddatastructures #leetcode #python канала whoami // global