DSAMotivator

Tries

Prefix trees make 'starts with' queries instant — autocomplete's data structure.

The idea

The full written guide for Triesis on its way. The practice progression below is live — it's the same curated, ordered list our users work through inside the app.

Practice progression

In this order, on LeetCode. Each one adds a wrinkle the previous one didn't have.

  1. 1#208 Implement Trie (Prefix Tree)Medium
  2. 2#211 Design Add and Search Words Data StructureMedium
  3. 3#1268 Search Suggestions SystemMedium
  4. 4#212 Word Search IIHard
  5. 5#421 Maximum XOR of Two Numbers in an ArrayMedium

Knowing the pattern is half the job. Showing up daily is the other half.

DSAMotivator tracks this exact progression — with streaks, XP, and a map that fills in as you go.

Start free — 7 days