Training

Correct Code Training

Watch how correct solutions are reasoned before they are written.

These public lessons show the Correct Code Framework in action. Learn how to read a problem, identify its shape, reason through constraints, form an invariant, trace scanner movement, track recorder state, and prove why the final solution is lawful before writing code.

The Correct Code Framework

Think like a detective.

Video Training: Watch them like an investigator.

  • Define the intent before the code
  • Define the problem shape before the solution
  • Define the invariant before the implementation
  • Define the scanner movement
  • Define the recorder
  • Return the validated results

The goal is not just to understand one solution. The goal is to learn how to reason through unfamiliar problems.

Training Library

Lessons and Walkthroughs

What Is the Correct Code Framework?

Learn why CCF starts with intent, structure, and proof before code.

Correct Code Philosophy

Orient yourself to the reasoning-first philosophy behind CCF.

The Cali San Diego Algorithm 2

See how evidence and constraints narrow the lawful decision path.

Case Files Introduction

Learn how case files turn practice into structured investigation.

Case File 001: Find Target Element

Practice reading the problem, finding the shape, and preserving correctness.

Open Case File
Case File 002: Two Sum

Separate scanner movement, recorder state, and the answer contract.

Open Case File
Case File 003: Two Sum II

Watch constraints remove weak approaches and narrow the solution family.

Open Case File
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Case File 004

Trace repair decisions while the invariant stays protected.

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Case File 005

Keep state, evidence, and proof aligned in a harder investigation.

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Case File 006

Study the recorder, invariant, and stopping rule as one proof path.

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Case File 007

See the decision path before final code transcription.

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Case File 008

See the decision path before final code transcription.

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Case File 009

See the decision path before final code transcription.

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Case File 010

See the decision path before final code transcription.

Next Step

Videos show the method. Case files make you practice it.

Videos teach the reasoning sequence. Case Files make you do the thinking yourself. Start with the three public previews, then use Starter Access for Case Files #004 through #025 or continue into the complete Master DSA curriculum.