Intermediate 25 min

Test Your Knowledge

You’ve learned selection sort. Let’s see how well you understand it.

Knowledge Check Quiz

Coding Challenge

Implement selection sort:

🟨 JavaScript Selection Sort Challenge
📟 Console Output
Run code to see output...

Key Takeaways

You’ve mastered:

Selection Sort Algorithm: Find minimum, swap, repeat
Implementation: Nested loops with minimum finding
Complexity: O(n²) time, O(1) space
Characteristics: Few swaps, not stable, always O(n²)
When to Use: Educational, small datasets, minimal swaps needed

What You Can Build Now

With selection sort knowledge, you can:

  • Understand sorting fundamentals
  • Implement simple sorting
  • Appreciate why better algorithms exist
  • Solve basic sorting problems
  • Build intuition for algorithm analysis

Next Steps

  • Practice with more sorting problems
  • Learn faster algorithms (quicksort, mergesort)
  • Study algorithm analysis techniques
  • Explore other O(n²) sorting algorithms

Great job completing this tutorial!