🌱 DSA (Beginner) · Start Here · cozy lesson
How to Pick a Pattern
9 min · 1 min read · no scary math, promise
🤖
You’ve got this. Read a little, play a little — I’ll wait. No rush.
Cheat cues (beginner)
- Sorted / pair / palindrome → Two Pointers
- Contiguous subarray/substring, longest/shortest → Sliding Window
- Counts, duplicates, Two Sum → Hash Map
- Range sum queries → Prefix Sum
- Search in sorted/rotated → Binary Search
If stuck: brute first, ask “am I rechecking? Can a map/window remember it?”
💛 Enjoying? Try 5 playful quizzes or watch it move.
Check your understanding
Correct answers earn XP (once each).
1. 'Sorted array, pair sum' → ?
2. 'Longest substring without repeat' → ?
My notes (saved in this browser)
Select text above → Save selection, or write your own. AlgoMaster-style notebook, local-first for MVP.
No notes yet. Your highlights will live here.
Finished reading? Seal it with a tick ✅
The checkbox in the explorer turns green too — same progress.