Problem 146. Tune your guitar

Created by the cyclist

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Given an input string with the scientific pitch notation for standard tuning ( http://en.wikipedia.org/wiki/Guitar_tunings#Standard_tuning ) of a guitar string (e.g. 'E4'), return the frequency (to nearest whole number) in hertz (in this case, 330).

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Last Solution submitted on Jul 23, 2025

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Boris Huart on 9 Jan 2013

Many solutions depend on the tested inputs... Is there a way to prevent it ?

Corentin OGER on 21 Feb 2019

I posted 2 working solutions, they're not the shortest, but at least, they work with ANY input (C0, B10...), not just the tested ones!
Almost all working solutions are just a plain lookup tables : boring.

Voss on 26 Sep 2020

Add some sharps and flats to the test cases.

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Problem 146. Tune your guitar

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Problem 146. Tune your guitar

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Last 200 Solutions

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Problem Recent Solvers121

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