Solution

Mar 10, 2026 Engineering

Wildcard Pattern Matching: DP Solution

Wildcard pattern matching is everywhere. When you type *.txt in your terminal, use SELECT * FROM in SQL, or configure ignore patterns in .gitignore, you’re using wildcard matching. The problem…

Shortest Palindrome: KMP-Based Solution

LeetCode 214 asks a deceptively simple question: given a string s, find the shortest palindrome you can create by adding characters only to the front. You can’t append to the end or modify…

Longest Common Subsequence: DP Solution

The Longest Common Subsequence (LCS) problem asks a deceptively simple question: given two strings, what’s the longest sequence of characters that appears in both, in the same order, but not…