Problem 44. Trimming Spaces

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Given a string, remove all leading and trailing spaces (where space is defined as ASCII 32).

 Input  a = ' singular value decomposition  '
 Output b is 'singular value decomposition'

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Last Solution submitted on Jul 02, 2026

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Franck Dernoncourt on 28 Jan 2012

Test #5 seems false:
I guess "a = sprintf('\ttab in front, space at end ');" should be a = '\ttab in front, space at end '.
Besides, tab is ASCII 9 (not 32).

Selvaraaju Murugesan on 15 Jan 2013

@Franck..use isspace function. There is a difference between whitespace and tab space! BTW strtrim removes both white and tab space !

Sanzhar Askaruly on 3 Jul 2019

pretty easy

Rik on 13 Jan 2021

This problem should probably contain a test with only spaces as well. That requires solutions to be much more robust.

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