David R. MacIver 10/21/2025

How to find things (an intro to binary search)

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This article introduces binary search, a fundamental algorithm for efficiently finding items in sorted data. The author, a software developer, explains the concept using a relatable story about locating the exact time a bike was stolen from CCTV footage. By repeatedly halving the search range, the method reduces an O(n) problem to O(log n). The article includes code examples and is aimed at both programmers and non-programmers, offering a fresh perspective on a classic technique.

How to find things (an intro to binary search)

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