DSA TrainerLeetCode practice for people who need hints before the solution.
Most sites either dump the answer or leave you staring at a blinking cursor. DSA Trainer walks you through the problem — Understand → Pattern → Brute Force → Optimize → Code — and only reveals as much as you need.
“Can't I just ask ChatGPT?”
You can. But ChatGPT is happy to hand over the full answer, which is exactly what gets you stuck — it's a great crutch, not a great teacher. The whole point of DSA Trainer is the scaffolding around the answer.
| When you're stuck, does it… | ChatGPT | DSA Trainer |
|---|---|---|
| Asks you to think first | Almost never | Yes — guiding questions before any hint |
| Reveals hints in stages | Dumps the full answer | 5-rung hint ladder, you control the pace |
| Teaches the pattern, not just the problem | Solves this one | Names the trigger so you spot it next time |
| Shows a dry run, step by step | Rarely | Every optimized solution |
How a problem flows
Every problem follows the same skeleton. You learn the skeleton once, and every future problem becomes a fill-in-the-blank instead of a blank page.
Understand the problem
Plain-English summary, sample input/output. No jargon dumping.
Spot the pattern
A one-line trigger question for each pattern ("have I seen this before?") so you start recognizing them.
Climb the hint ladder
Five rungs from nudge → near-solution. You ask for the next rung only if you need it.
Dry run, then code
Walk through state row by row before writing code, so you actually understand the trace.
Be one of the first 50.
I'm building the first 5 problems now — Two Sum, Contains Duplicate, Valid Anagram, Valid Palindrome, Best Time to Buy/Sell Stock. Drop your email and I'll send you the link the day it's ready.