# Big-O Notation

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## Big-O Notation Definition

A theoretical measure of the execution of an algorithm, usually the time or memory needed, given the problem size n, which is usually the number of items; a mathematical notation used to describe the asymptotic behavior of functions. More precisely, it is used to describe an asymptotic upper bound for the magnitude of a function in terms of another, usually simpler, function. (from NIST)

## Big-O Notation Synonyms

Big-O Notation

## Terms in Big-O Notation category

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