Advanced Algorithm Design · Algorithm Design

Greedy Algorithm

Greedy algorithms make the locally best choice at each step, but students must learn when that local choice is globally valid.

Student Focus

We teach greedy methods alongside counterexamples so students do not overapply them.

Guided Lesson Notes

How Code Scholars teaches Greedy Algorithm

This guide helps students understand the idea, implement it carefully, explain the runtime, and recognize when the pattern belongs in a larger problem.

In a session, students usually start with a small trace, then write or review code, then test edge cases. The final step is a short explanation: what the structure or algorithm stores, why it is correct, and what changes when the input grows.

Key Ideas

  • Local choice strategy
  • Counterexamples
  • Exchange-style intuition

Practice Prompts

  • Solve interval scheduling greedily.
  • Find a problem where an obvious greedy choice fails.

Tutoring Connection

Turn the topic into usable problem-solving skill

Students can use this page before a lesson, after a difficult homework assignment, or while preparing for AP Computer Science A extensions, Advanced Topics in CS, USACO growth, or a college data structures course.