Class 48: Insertion Sort

Back to Introduction to Sorting. On to Merge Sort.

This outline is also available in PDF.

Held: Friday, April 30, 2010

Summary: We move from our general exploration of sorting to the implementation of a particular sorting algorithm, insertion sort. We also explore how the running time for that algorithm varies based on the number of values we are sorting.

Related Pages:

Notes:

• Reading for Monday: Merge Sort.
• Exam 3 is now ready for public consumption, with an all-new grading scheme.
• Professor Weinman will be running class today.
• EC for today's cool lunchtime talk!
• EC for Saturday's Field Day, provided you're not in Dag.

Overview:

• Expressing sorting algorithms in code.
• Key technique: Insertion.
• Analyzing insertion sort.

Preparation: Insertion Sort

• What is the key idea in insertion sort?
• How does insertion sort differ in lists and vectors?
• Why do we provide you with three different kinds of list-based insertion sort (and four kinds of insertion sort)?

Lab

Back to Introduction to Sorting. On to Merge Sort.

Disclaimer: I usually create these pages on the fly, which means that I rarely proofread them and they may contain bad grammar and incorrect details. It also means that I tend to update them regularly (see the history for more details). Feel free to contact me with any suggestions for changes.

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Samuel A. Rebelsky, rebelsky@grinnell.edu