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Computer Science Introduction to Algorithms Time Complexity Common Complexities

I can't figure out the answer to what should be a simple question. What does the O in 'Big O' stand for? Its not "order"

The answer is not the following: "order", "order of", "order of complexity", "order of magnitude of complexity"

Courtney Wilson
Courtney Wilson
8,031 Points

I was wondering this as well. He says "order of magnitude of complexity" in the video at 4:16. From the transcript:

4:16 The O comes from order of magnitude of complexity.

4:20 So that where we get the big O from.

4 Answers

Order of Growth :)

The answer is "magnitude"

The answer is in the teacher's notes to this video


The answer is "magnitude"