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📰 Dev.to · Alex Mateo

5 articles · Updated every 3 hours · View all reads

All Articles 132,867 Blog Posts 137,414 Tech Tutorials 34,436 Research Papers 25,938 News 18,833 ⚡ AI Lessons

Every Backtracking Problem Is the Same Three Lines. I Just Couldn't See the Tree.

Dev.to · Alex Mateo ⚡ Algorithms & Data Structures ⚡ AI Lesson 3w ago

Every Backtracking Problem Is the Same Three Lines. I Just Couldn't See the Tree.

I avoided backtracking for an embarrassingly long time. I had solved maybe 200 problems and could do...

The 7 Trigger Questions That Tell You Which Coding Pattern to Use

Dev.to · Alex Mateo ⚡ Algorithms & Data Structures ⚡ AI Lesson 1mo ago

The 7 Trigger Questions That Tell You Which Coding Pattern to Use

Most developers preparing for coding interviews learn the patterns. Sliding window. Two pointers....

Sliding Window & Two Pointers: The Decision Framework Nobody Teaches You

Dev.to · Alex Mateo ⚡ Algorithms & Data Structures ⚡ AI Lesson 2mo ago

Sliding Window & Two Pointers: The Decision Framework Nobody Teaches You

Most people learn sliding window and two pointers as two separate techniques, practice them in...

Graph Algorithms for Coding Interviews: When to Use BFS, DFS, or Dijkstra

Dev.to · Alex Mateo ⚡ Algorithms & Data Structures ⚡ AI Lesson 3mo ago

Graph Algorithms for Coding Interviews: When to Use BFS, DFS, or Dijkstra

Graphs are the most feared topic in coding interviews — not because they're impossible, but because...

Why LeetCode is So Hard — and Why Grinding More Problems Won't Help

Dev.to · Alex Mateo ⚡ AI Lesson 3mo ago

Why LeetCode is So Hard — and Why Grinding More Problems Won't Help

Here's why grinding leads to memorization, not understanding, and what to do instead. You've solved...