011000–1500 ELO
Foundation 100
Build confidence with the patterns that appear everywhere: arrays, strings, maps, stacks, queues, and foundational traversal.
Deliberate coding practice
Stop collecting problems.
Start building skill.
RayCode turns hundreds of interview problems into a clear progression. Choose the right challenge, practice with intent, and see which skills are actually becoming durable.
YOUR PRACTICE PATH calibrated
Foundation 100ELO 1000–1500
38 / 100Intermediate 100ELO 1600–1900
LockedHard 100ELO 1900–2400
Locked300problems in the core paths
707problems in the future roadmap
5 signalsbehind mastery estimates
A progression you can finish
Three lanes. One clear next step.
Every core path contains 100 curated problems. Difficulty and topic details stay hidden until you choose to reveal them, so your practice stays honest.
021600–1900 ELO
Intermediate 100
Combine patterns under tighter constraints and practice recognizing the invariant before reaching for an implementation.
031900–2400 ELO
Hard 100
Work through advanced dynamic programming, graphs, greedy arguments, and the edge cases that distinguish strong solutions.
Practice that produces evidence
Your dashboard should tell you what to do next.
RayCode combines your submissions, problem difficulty, recency, distinct problems, and active solving time. The result is a mastery estimate grounded in what you have actually practiced—not a vanity streak.
- Resume the right playlist position
- Review weak topics before they fade
- Keep attempts and learning history private
Calibrated paths
Problems are grouped by ELO so the jump between sessions is intentional.
Evidence-based mastery
Accuracy alone is not enough; recency, breadth, difficulty, and time matter.
Solve where it counts
During Beta, open the source problem on LeetCode and keep RayCode as your plan.
Concept practice
Reinforce Python, OOP, and relational database fundamentals with focused trivia.
Your practice data belongs to you
Private by default. Exportable. Deletable.
Control profile visibility and analytics sharing from your account. Download your information or delete your account without contacting support.
Build the skill, not just the streak.
Your first focused path is waiting.
Go to your dashboard